---
_id: '59906'
abstract:
- lang: eng
  text: The cationic molybdenum alkylidyne N-heterocyclic carbene (NHC) complex [Mo(C-p-OMeC6H4)(OCMe(CF3)2)2
    (IMes)][B(ArF4] (IMes = 1,3-dimesitylimidazol-2-ylidene) was selectively immobilized
    inside the pores of ordered mesoporous silica (OMS) with pore diameters of 66,
    56, and 28 Å and used in the ring-expansion metathesis polymerization (REMP) of
    cyclic olefins to yield cyclic polymers. A strong confinement effect was observed
    for cis-cyclooctene (cCOE), 1,5-cyclooctadiene (COD), (+)-2,3-endo,exo-dicarbomethoxynorborn-5-ene
    ((+)-DCMNBE), and 2-methyl-2-phenylcycloprop-1-ene (MPCP), allowing for the synthesis
    of low-molecular-weight cyclic polymers even at a high monomer concentration.
    The exclusive formation of cyclic polymers was demonstrated by matrix-assisted
    laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry. Confinement
    also influences stereoselectivity, resulting in a pronounced increase in Z-selectivity
    and in an increased cis-syndiospecificity.
article_type: original
author:
- first_name: Patrick
  full_name: Probst, Patrick
  last_name: Probst
- first_name: Moritz
  full_name: Lindemann, Moritz
  last_name: Lindemann
- first_name: Johanna R.
  full_name: Bruckner, Johanna R.
  last_name: Bruckner
- first_name: Boshra
  full_name: Atwi, Boshra
  last_name: Atwi
- first_name: Dongren
  full_name: Wang, Dongren
  last_name: Wang
- first_name: Felix Richard
  full_name: Fischer, Felix Richard
  id: '107380'
  last_name: Fischer
- first_name: Marc
  full_name: Högler, Marc
  last_name: Högler
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
- first_name: Niels
  full_name: Hansen, Niels
  last_name: Hansen
- first_name: Michael
  full_name: Dyballa, Michael
  last_name: Dyballa
- first_name: Michael R.
  full_name: Buchmeiser, Michael R.
  last_name: Buchmeiser
citation:
  ama: Probst P, Lindemann M, Bruckner JR, et al. Ring-Expansion Metathesis Polymerization
    under Confinement. <i>Journal of the American Chemical Society</i>. 2025;147(10):8741-8750.
    doi:<a href="https://doi.org/10.1021/jacs.4c18171">10.1021/jacs.4c18171</a>
  apa: Probst, P., Lindemann, M., Bruckner, J. R., Atwi, B., Wang, D., Fischer, F.
    R., Högler, M., Bauer, M., Hansen, N., Dyballa, M., &#38; Buchmeiser, M. R. (2025).
    Ring-Expansion Metathesis Polymerization under Confinement. <i>Journal of the
    American Chemical Society</i>, <i>147</i>(10), 8741–8750. <a href="https://doi.org/10.1021/jacs.4c18171">https://doi.org/10.1021/jacs.4c18171</a>
  bibtex: '@article{Probst_Lindemann_Bruckner_Atwi_Wang_Fischer_Högler_Bauer_Hansen_Dyballa_et
    al._2025, title={Ring-Expansion Metathesis Polymerization under Confinement},
    volume={147}, DOI={<a href="https://doi.org/10.1021/jacs.4c18171">10.1021/jacs.4c18171</a>},
    number={10}, journal={Journal of the American Chemical Society}, publisher={American
    Chemical Society (ACS)}, author={Probst, Patrick and Lindemann, Moritz and Bruckner,
    Johanna R. and Atwi, Boshra and Wang, Dongren and Fischer, Felix Richard and Högler,
    Marc and Bauer, Matthias and Hansen, Niels and Dyballa, Michael and et al.}, year={2025},
    pages={8741–8750} }'
  chicago: 'Probst, Patrick, Moritz Lindemann, Johanna R. Bruckner, Boshra Atwi, Dongren
    Wang, Felix Richard Fischer, Marc Högler, et al. “Ring-Expansion Metathesis Polymerization
    under Confinement.” <i>Journal of the American Chemical Society</i> 147, no. 10
    (2025): 8741–50. <a href="https://doi.org/10.1021/jacs.4c18171">https://doi.org/10.1021/jacs.4c18171</a>.'
  ieee: 'P. Probst <i>et al.</i>, “Ring-Expansion Metathesis Polymerization under
    Confinement,” <i>Journal of the American Chemical Society</i>, vol. 147, no. 10,
    pp. 8741–8750, 2025, doi: <a href="https://doi.org/10.1021/jacs.4c18171">10.1021/jacs.4c18171</a>.'
  mla: Probst, Patrick, et al. “Ring-Expansion Metathesis Polymerization under Confinement.”
    <i>Journal of the American Chemical Society</i>, vol. 147, no. 10, American Chemical
    Society (ACS), 2025, pp. 8741–50, doi:<a href="https://doi.org/10.1021/jacs.4c18171">10.1021/jacs.4c18171</a>.
  short: P. Probst, M. Lindemann, J.R. Bruckner, B. Atwi, D. Wang, F.R. Fischer, M.
    Högler, M. Bauer, N. Hansen, M. Dyballa, M.R. Buchmeiser, Journal of the American
    Chemical Society 147 (2025) 8741–8750.
date_created: 2025-05-15T06:53:39Z
date_updated: 2025-05-15T06:55:29Z
department:
- _id: '306'
doi: 10.1021/jacs.4c18171
intvolume: '       147'
issue: '10'
language:
- iso: eng
main_file_link:
- url: https://pubs.acs.org/doi/full/10.1021/jacs.4c18171
page: 8741-8750
publication: Journal of the American Chemical Society
publication_identifier:
  issn:
  - 0002-7863
  - 1520-5126
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Ring-Expansion Metathesis Polymerization under Confinement
type: journal_article
user_id: '48467'
volume: 147
year: '2025'
...
---
_id: '60600'
abstract:
- lang: eng
  text: In the search for noble metal free photocatalytic systems, iron is the dream
    candidate. To increase excited state lifetimes of iron complexes, the multichromophoric
    approach is promising, combining organic chromophores with photoactive iron complexes,
    potentially enabling a reservoir effect. We present a series of chromophore-functionalized
    complexes based on the parental FeIII complex [Fe(ImP)2][PF6] (HImP = 1,1′-(1,3-phenylene)bis(3-methyl-1-imidazole-2-ylidene)).
    The four organic chromophores benzene, naphthalene, anthracene, and pyrene are
    attached to the ImP-ligand in para-position to the coordination site to systematically
    investigate the influence of the steric demand and electronic properties of the
    chromophore on charge transfer lifetimes as well as photodynamics. A thorough
    ground state characterization was conducted in addition to investigations of the
    excited state dynamics by transient absorption spectroscopy and streak camera
    emission measurements. The conclusions drawn are supported by extensive DFT calculations.
    The emission coefficients could be significantly improved by the addition of chromophores.
    After excitation of the complexes with larger chromophores, coplanarization of
    the backbone and complex motif occurs to stabilize the formal charge. This results
    in population of a superligand state that exhibits a much faster radiationless
    relaxation to the ground state compared to the parent complex, hindering a reservoir
    effect.
article_number: acs.inorgchem.5c00526
author:
- first_name: Lennart
  full_name: Schmitz, Lennart
  id: '53140'
  last_name: Schmitz
- first_name: Miguel A.
  full_name: Argüello Cordero, Miguel A.
  last_name: Argüello Cordero
- first_name: Mohammed J.
  full_name: Al-Marri, Mohammed J.
  last_name: Al-Marri
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Hans
  full_name: Egold, Hans
  id: '101'
  last_name: Egold
- first_name: Adam
  full_name: Neuba, Adam
  last_name: Neuba
- first_name: Jakob
  full_name: Steube, Jakob
  id: '40342'
  last_name: Steube
  orcid: 0000-0003-3178-4429
- first_name: Bastian Johannes
  full_name: Bracht, Bastian Johannes
  id: '86707'
  last_name: Bracht
- first_name: Olga S.
  full_name: Bokareva, Olga S.
  last_name: Bokareva
- first_name: Stefan
  full_name: Lochbrunner, Stefan
  last_name: Lochbrunner
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Schmitz L, Argüello Cordero MA, Al-Marri MJ, et al. Chromophore Induced Effects
    in Iron(III) Complexes. <i>Inorganic Chemistry</i>. Published online 2025. doi:<a
    href="https://doi.org/10.1021/acs.inorgchem.5c00526">10.1021/acs.inorgchem.5c00526</a>
  apa: Schmitz, L., Argüello Cordero, M. A., Al-Marri, M. J., Schoch, R., Egold, H.,
    Neuba, A., Steube, J., Bracht, B. J., Bokareva, O. S., Lochbrunner, S., &#38;
    Bauer, M. (2025). Chromophore Induced Effects in Iron(III) Complexes. <i>Inorganic
    Chemistry</i>, Article acs. inorgchem.5c00526. <a href="https://doi.org/10.1021/acs.inorgchem.5c00526">https://doi.org/10.1021/acs.inorgchem.5c00526</a>
  bibtex: '@article{Schmitz_Argüello Cordero_Al-Marri_Schoch_Egold_Neuba_Steube_Bracht_Bokareva_Lochbrunner_et
    al._2025, title={Chromophore Induced Effects in Iron(III) Complexes}, DOI={<a
    href="https://doi.org/10.1021/acs.inorgchem.5c00526">10.1021/acs.inorgchem.5c00526</a>},
    number={acs. inorgchem.5c00526}, journal={Inorganic Chemistry}, publisher={American
    Chemical Society (ACS)}, author={Schmitz, Lennart and Argüello Cordero, Miguel
    A. and Al-Marri, Mohammed J. and Schoch, Roland and Egold, Hans and Neuba, Adam
    and Steube, Jakob and Bracht, Bastian Johannes and Bokareva, Olga S. and Lochbrunner,
    Stefan and et al.}, year={2025} }'
  chicago: Schmitz, Lennart, Miguel A. Argüello Cordero, Mohammed J. Al-Marri, Roland
    Schoch, Hans Egold, Adam Neuba, Jakob Steube, et al. “Chromophore Induced Effects
    in Iron(III) Complexes.” <i>Inorganic Chemistry</i>, 2025. <a href="https://doi.org/10.1021/acs.inorgchem.5c00526">https://doi.org/10.1021/acs.inorgchem.5c00526</a>.
  ieee: 'L. Schmitz <i>et al.</i>, “Chromophore Induced Effects in Iron(III) Complexes,”
    <i>Inorganic Chemistry</i>, Art. no. acs. inorgchem.5c00526, 2025, doi: <a href="https://doi.org/10.1021/acs.inorgchem.5c00526">10.1021/acs.inorgchem.5c00526</a>.'
  mla: Schmitz, Lennart, et al. “Chromophore Induced Effects in Iron(III) Complexes.”
    <i>Inorganic Chemistry</i>, acs. inorgchem.5c00526, American Chemical Society
    (ACS), 2025, doi:<a href="https://doi.org/10.1021/acs.inorgchem.5c00526">10.1021/acs.inorgchem.5c00526</a>.
  short: L. Schmitz, M.A. Argüello Cordero, M.J. Al-Marri, R. Schoch, H. Egold, A.
    Neuba, J. Steube, B.J. Bracht, O.S. Bokareva, S. Lochbrunner, M. Bauer, Inorganic
    Chemistry (2025).
date_created: 2025-07-14T08:49:25Z
date_updated: 2025-08-15T12:18:08Z
department:
- _id: '306'
doi: 10.1021/acs.inorgchem.5c00526
keyword:
- Photo
language:
- iso: eng
publication: Inorganic Chemistry
publication_identifier:
  issn:
  - 0020-1669
  - 1520-510X
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Chromophore Induced Effects in Iron(III) Complexes
type: journal_article
user_id: '48467'
year: '2025'
...
---
_id: '58180'
abstract:
- lang: eng
  text: 'A series of CoIII complexes [Co(RImP)2][PF6], with HMeImP = 1,1′-(1,3-phenylene)bis(3-methyl-1-imidazole-2-ylidene))
    and R = Me, Et, iPr, nBu, is presented in this work. The influence of the strong
    donor ligand on the ground and excited-state photophysical properties was investigated
    in the context of different alkyl substituents at the imidazole nitrogen. X-ray
    diffraction revealed no significant alterations of the structures and all differences
    in the series emerge from the electronic structures. These were probed via cyclic
    voltammetry and UV–vis spectroscopy, detailing the influence of the different
    alkyl substituents on the ground-state properties. All complexes are emissive
    at 77 K from a 3MC state, which exhibits lifetimes in the range of 1–5 ns at room
    temperature, depending on the alkyl substituent. Therefore, it is clearly shown
    that even small differences in the electronic structure have a large impact on
    the details of the excited state landscape. The observed behavior was rationalized
    by a detailed DFT analysis, which shows that the minimum-energy crossing point
    to the ground-state is located only slightly above the MC energy: Consequently,
    nonradiative decay to the ground state at room temperature is enabled, while at
    77 K this path is prohibited, leading to low-temperature 3MC emission.'
author:
- first_name: Athul
  full_name: Krishna, Athul
  last_name: Krishna
- first_name: Lorena
  full_name: Fritsch, Lorena
  id: '44418'
  last_name: Fritsch
- first_name: Jakob
  full_name: Steube, Jakob
  id: '40342'
  last_name: Steube
  orcid: 0000-0003-3178-4429
- first_name: Miguel A.
  full_name: Argüello Cordero, Miguel A.
  last_name: Argüello Cordero
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Adam
  full_name: Neuba, Adam
  last_name: Neuba
- first_name: Stefan
  full_name: Lochbrunner, Stefan
  last_name: Lochbrunner
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Krishna A, Fritsch L, Steube J, et al. Low Temperature Emissive Cyclometalated
    Cobalt(III) Complexes. <i>Inorganic Chemistry</i>. Published online 2025. doi:<a
    href="https://doi.org/10.1021/acs.inorgchem.4c04479">10.1021/acs.inorgchem.4c04479</a>
  apa: Krishna, A., Fritsch, L., Steube, J., Argüello Cordero, M. A., Schoch, R.,
    Neuba, A., Lochbrunner, S., &#38; Bauer, M. (2025). Low Temperature Emissive Cyclometalated
    Cobalt(III) Complexes. <i>Inorganic Chemistry</i>. <a href="https://doi.org/10.1021/acs.inorgchem.4c04479">https://doi.org/10.1021/acs.inorgchem.4c04479</a>
  bibtex: '@article{Krishna_Fritsch_Steube_Argüello Cordero_Schoch_Neuba_Lochbrunner_Bauer_2025,
    title={Low Temperature Emissive Cyclometalated Cobalt(III) Complexes}, DOI={<a
    href="https://doi.org/10.1021/acs.inorgchem.4c04479">10.1021/acs.inorgchem.4c04479</a>},
    journal={Inorganic Chemistry}, publisher={American Chemical Society (ACS)}, author={Krishna,
    Athul and Fritsch, Lorena and Steube, Jakob and Argüello Cordero, Miguel A. and
    Schoch, Roland and Neuba, Adam and Lochbrunner, Stefan and Bauer, Matthias}, year={2025}
    }'
  chicago: Krishna, Athul, Lorena Fritsch, Jakob Steube, Miguel A. Argüello Cordero,
    Roland Schoch, Adam Neuba, Stefan Lochbrunner, and Matthias Bauer. “Low Temperature
    Emissive Cyclometalated Cobalt(III) Complexes.” <i>Inorganic Chemistry</i>, 2025.
    <a href="https://doi.org/10.1021/acs.inorgchem.4c04479">https://doi.org/10.1021/acs.inorgchem.4c04479</a>.
  ieee: 'A. Krishna <i>et al.</i>, “Low Temperature Emissive Cyclometalated Cobalt(III)
    Complexes,” <i>Inorganic Chemistry</i>, 2025, doi: <a href="https://doi.org/10.1021/acs.inorgchem.4c04479">10.1021/acs.inorgchem.4c04479</a>.'
  mla: Krishna, Athul, et al. “Low Temperature Emissive Cyclometalated Cobalt(III)
    Complexes.” <i>Inorganic Chemistry</i>, American Chemical Society (ACS), 2025,
    doi:<a href="https://doi.org/10.1021/acs.inorgchem.4c04479">10.1021/acs.inorgchem.4c04479</a>.
  short: A. Krishna, L. Fritsch, J. Steube, M.A. Argüello Cordero, R. Schoch, A. Neuba,
    S. Lochbrunner, M. Bauer, Inorganic Chemistry (2025).
date_created: 2025-01-15T08:29:21Z
date_updated: 2025-08-15T12:30:18Z
department:
- _id: '306'
doi: 10.1021/acs.inorgchem.4c04479
keyword:
- Photo
language:
- iso: eng
publication: Inorganic Chemistry
publication_identifier:
  issn:
  - 0020-1669
  - 1520-510X
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Low Temperature Emissive Cyclometalated Cobalt(III) Complexes
type: journal_article
user_id: '48467'
year: '2025'
...
---
_id: '56075'
abstract:
- lang: eng
  text: An isostructural series of FeII, FeIII, and Fe(IV)complexes [Fe(ImP)2]0/+/2+
    utilizing the ImP 1,1′-(1,3-phenylene)-bis(3-methyl-1-imidazol-2-ylidene) ligand,
    combining N-heterocy-clic carbenes and cyclometalating functions, is presented.
    The strong donor motif stabilizes the high-valent Fe(IV) oxidation state yet keeps
    the FeII oxidation state accessible from the parent Fe(III)compound. Chemical
    oxidation of [Fe(ImP)2]+ yields stable [FeIV(ImP)2]2+. In contrast, [FeII(ImP)2]0,
    obtained by reduction,is highly sensitive toward oxygen. Exhaustive ground state
    characterization by single-crystal X-ray diffraction, 1H NMR,Mössbauer spectroscopy,
    temperature-dependent magnetic measurements, a combination of X-ray absorption
    near edge structureand valence-to-core, as well as core-to-core X-ray emission
    spectroscopy, complemented by detailed density functional theory (DFT) analysis,
    reveals that the three complexes[Fe(ImP)2]0/+/2+ can be unequivocally attributed
    to low-spin d6, d5, and d4 complexes. The excited state landscape of the Fe(II)
    and Fe(IV) complexes is characterized by short-lived 3MLCT and 3LMCT states, with
    lifetimes of 5.1 and 1.4 ps, respectively. In the FeII-compound, an energetically
    low-lying MC state leads to fast deactivation of the MLCT state. The distorted
    square-pyramidal state, where one carbene is dissociated, can not only relax into
    the ground state, but also into a singlet dissociated state. Its formation was
    investigated with time-dependent optical spectroscopy, while insights into its
    structure were gained by NMR spectroscopy.
author:
- first_name: Jakob
  full_name: Steube, Jakob
  id: '40342'
  last_name: Steube
  orcid: 0000-0003-3178-4429
- first_name: Lorena
  full_name: Fritsch, Lorena
  id: '44418'
  last_name: Fritsch
- first_name: Ayla
  full_name: Kruse, Ayla
  last_name: Kruse
- first_name: Olga S.
  full_name: Bokareva, Olga S.
  last_name: Bokareva
- first_name: Serhiy
  full_name: Demeshko, Serhiy
  last_name: Demeshko
- first_name: Hossam
  full_name: Elgabarty, Hossam
  id: '60250'
  last_name: Elgabarty
  orcid: 0000-0002-4945-1481
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Mohammad
  full_name: Alaraby, Mohammad
  last_name: Alaraby
- first_name: Hans
  full_name: Egold, Hans
  id: '101'
  last_name: Egold
- first_name: Bastian Johannes
  full_name: Bracht, Bastian Johannes
  id: '86707'
  last_name: Bracht
- first_name: Lennart
  full_name: Schmitz, Lennart
  id: '53140'
  last_name: Schmitz
- first_name: Stephan
  full_name: Hohloch, Stephan
  last_name: Hohloch
- first_name: Thomas D.
  full_name: Kühne, Thomas D.
  last_name: Kühne
- first_name: Franc
  full_name: Meyer, Franc
  last_name: Meyer
- first_name: Oliver
  full_name: Kühn, Oliver
  last_name: Kühn
- first_name: Stefan
  full_name: Lochbrunner, Stefan
  last_name: Lochbrunner
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Steube J, Fritsch L, Kruse A, et al. Isostructural Series of a Cyclometalated
    Iron Complex in Three Oxidation States. <i>Inorganic Chemistry</i>. Published
    online 2024. doi:<a href="https://doi.org/10.1021/acs.inorgchem.4c02576">10.1021/acs.inorgchem.4c02576</a>
  apa: Steube, J., Fritsch, L., Kruse, A., Bokareva, O. S., Demeshko, S., Elgabarty,
    H., Schoch, R., Alaraby, M., Egold, H., Bracht, B. J., Schmitz, L., Hohloch, S.,
    Kühne, T. D., Meyer, F., Kühn, O., Lochbrunner, S., &#38; Bauer, M. (2024). Isostructural
    Series of a Cyclometalated Iron Complex in Three Oxidation States. <i>Inorganic
    Chemistry</i>. <a href="https://doi.org/10.1021/acs.inorgchem.4c02576">https://doi.org/10.1021/acs.inorgchem.4c02576</a>
  bibtex: '@article{Steube_Fritsch_Kruse_Bokareva_Demeshko_Elgabarty_Schoch_Alaraby_Egold_Bracht_et
    al._2024, title={Isostructural Series of a Cyclometalated Iron Complex in Three
    Oxidation States}, DOI={<a href="https://doi.org/10.1021/acs.inorgchem.4c02576">10.1021/acs.inorgchem.4c02576</a>},
    journal={Inorganic Chemistry}, publisher={American Chemical Society (ACS)}, author={Steube,
    Jakob and Fritsch, Lorena and Kruse, Ayla and Bokareva, Olga S. and Demeshko,
    Serhiy and Elgabarty, Hossam and Schoch, Roland and Alaraby, Mohammad and Egold,
    Hans and Bracht, Bastian Johannes and et al.}, year={2024} }'
  chicago: Steube, Jakob, Lorena Fritsch, Ayla Kruse, Olga S. Bokareva, Serhiy Demeshko,
    Hossam Elgabarty, Roland Schoch, et al. “Isostructural Series of a Cyclometalated
    Iron Complex in Three Oxidation States.” <i>Inorganic Chemistry</i>, 2024. <a
    href="https://doi.org/10.1021/acs.inorgchem.4c02576">https://doi.org/10.1021/acs.inorgchem.4c02576</a>.
  ieee: 'J. Steube <i>et al.</i>, “Isostructural Series of a Cyclometalated Iron Complex
    in Three Oxidation States,” <i>Inorganic Chemistry</i>, 2024, doi: <a href="https://doi.org/10.1021/acs.inorgchem.4c02576">10.1021/acs.inorgchem.4c02576</a>.'
  mla: Steube, Jakob, et al. “Isostructural Series of a Cyclometalated Iron Complex
    in Three Oxidation States.” <i>Inorganic Chemistry</i>, American Chemical Society
    (ACS), 2024, doi:<a href="https://doi.org/10.1021/acs.inorgchem.4c02576">10.1021/acs.inorgchem.4c02576</a>.
  short: J. Steube, L. Fritsch, A. Kruse, O.S. Bokareva, S. Demeshko, H. Elgabarty,
    R. Schoch, M. Alaraby, H. Egold, B.J. Bracht, L. Schmitz, S. Hohloch, T.D. Kühne,
    F. Meyer, O. Kühn, S. Lochbrunner, M. Bauer, Inorganic Chemistry (2024).
date_created: 2024-09-05T11:34:20Z
date_updated: 2025-08-15T12:17:35Z
department:
- _id: '306'
doi: 10.1021/acs.inorgchem.4c02576
keyword:
- Photo
language:
- iso: eng
publication: Inorganic Chemistry
publication_identifier:
  issn:
  - 0020-1669
  - 1520-510X
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Isostructural Series of a Cyclometalated Iron Complex in Three Oxidation States
type: journal_article
user_id: '48467'
year: '2024'
...
---
_id: '56074'
abstract:
- lang: eng
  text: Effective photoinduced charge transfer makes molecular bimetallic assemblies
    attractive for applications as active light‐induced proton reduction systems.
    Developing competitive base metal dyads is mandatory for a more sustainable future.
    However, the electron transfer mechanisms from the photosensitizer to the proton
    reduction catalyst in base metal dyads remain so far unexplored. A Fe─Co dyad
    that exhibits photocatalytic H2 production activity is studied using femtosecond
    X‐ray emission spectroscopy, complemented by ultrafast optical spectroscopy and
    theoretical time‐dependent DFT calculations, to understand the electronic and
    structural dynamics after photoexcitation and during the subsequent charge transfer
    process from the Fe(II) photosensitizer to the cobaloxime catalyst. This novel
    approach enables the simultaneous measurement of the transient X‐ray emission
    at the iron and cobalt K‐edges in a two‐color experiment. With this methodology,
    the excited state dynamics are correlated to the electron transfer processes,
    and evidence of the Fe→Co electron transfer as an initial step of proton reduction
    activity is unraveled.
author:
- first_name: Michał
  full_name: Nowakowski, Michał
  id: '78878'
  last_name: Nowakowski
  orcid: 0000-0002-3734-7011
- first_name: Marina
  full_name: Huber‐Gedert, Marina
  last_name: Huber‐Gedert
- first_name: Hossam
  full_name: Elgabarty, Hossam
  id: '60250'
  last_name: Elgabarty
  orcid: 0000-0002-4945-1481
- first_name: Aleksandr
  full_name: Kalinko, Aleksandr
  last_name: Kalinko
- first_name: Jacek
  full_name: Kubicki, Jacek
  last_name: Kubicki
- first_name: Ahmet
  full_name: Kertmen, Ahmet
  last_name: Kertmen
- first_name: Natalia
  full_name: Lindner, Natalia
  last_name: Lindner
- first_name: Dmitry
  full_name: Khakhulin, Dmitry
  last_name: Khakhulin
- first_name: Frederico A.
  full_name: Lima, Frederico A.
  last_name: Lima
- first_name: Tae‐Kyu
  full_name: Choi, Tae‐Kyu
  last_name: Choi
- first_name: Mykola
  full_name: Biednov, Mykola
  last_name: Biednov
- first_name: Lennart
  full_name: Schmitz, Lennart
  id: '53140'
  last_name: Schmitz
- first_name: Natalia
  full_name: Piergies, Natalia
  last_name: Piergies
- first_name: Peter
  full_name: Zalden, Peter
  last_name: Zalden
- first_name: Katerina
  full_name: Kubicek, Katerina
  last_name: Kubicek
- first_name: Angel
  full_name: Rodriguez‐Fernandez, Angel
  last_name: Rodriguez‐Fernandez
- first_name: Mohammad Alaraby
  full_name: Salem, Mohammad Alaraby
  last_name: Salem
- first_name: Sophie E.
  full_name: Canton, Sophie E.
  last_name: Canton
- first_name: Christian
  full_name: Bressler, Christian
  last_name: Bressler
- first_name: Thomas D.
  full_name: Kühne, Thomas D.
  last_name: Kühne
- first_name: Wojciech
  full_name: Gawelda, Wojciech
  last_name: Gawelda
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Nowakowski M, Huber‐Gedert M, Elgabarty H, et al. Ultrafast Two‐Color X‐Ray
    Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad. <i>Advanced
    Science</i>. Published online 2024. doi:<a href="https://doi.org/10.1002/advs.202404348">10.1002/advs.202404348</a>
  apa: Nowakowski, M., Huber‐Gedert, M., Elgabarty, H., Kalinko, A., Kubicki, J.,
    Kertmen, A., Lindner, N., Khakhulin, D., Lima, F. A., Choi, T., Biednov, M., Schmitz,
    L., Piergies, N., Zalden, P., Kubicek, K., Rodriguez‐Fernandez, A., Salem, M.
    A., Canton, S. E., Bressler, C., … Bauer, M. (2024). Ultrafast Two‐Color X‐Ray
    Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad. <i>Advanced
    Science</i>. <a href="https://doi.org/10.1002/advs.202404348">https://doi.org/10.1002/advs.202404348</a>
  bibtex: '@article{Nowakowski_Huber‐Gedert_Elgabarty_Kalinko_Kubicki_Kertmen_Lindner_Khakhulin_Lima_Choi_et
    al._2024, title={Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited
    State Landscape in a Base Metal Dyad}, DOI={<a href="https://doi.org/10.1002/advs.202404348">10.1002/advs.202404348</a>},
    journal={Advanced Science}, publisher={Wiley}, author={Nowakowski, Michał and
    Huber‐Gedert, Marina and Elgabarty, Hossam and Kalinko, Aleksandr and Kubicki,
    Jacek and Kertmen, Ahmet and Lindner, Natalia and Khakhulin, Dmitry and Lima,
    Frederico A. and Choi, Tae‐Kyu and et al.}, year={2024} }'
  chicago: Nowakowski, Michał, Marina Huber‐Gedert, Hossam Elgabarty, Aleksandr Kalinko,
    Jacek Kubicki, Ahmet Kertmen, Natalia Lindner, et al. “Ultrafast Two‐Color X‐Ray
    Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad.” <i>Advanced
    Science</i>, 2024. <a href="https://doi.org/10.1002/advs.202404348">https://doi.org/10.1002/advs.202404348</a>.
  ieee: 'M. Nowakowski <i>et al.</i>, “Ultrafast Two‐Color X‐Ray Emission Spectroscopy
    Reveals Excited State Landscape in a Base Metal Dyad,” <i>Advanced Science</i>,
    2024, doi: <a href="https://doi.org/10.1002/advs.202404348">10.1002/advs.202404348</a>.'
  mla: Nowakowski, Michał, et al. “Ultrafast Two‐Color X‐Ray Emission Spectroscopy
    Reveals Excited State Landscape in a Base Metal Dyad.” <i>Advanced Science</i>,
    Wiley, 2024, doi:<a href="https://doi.org/10.1002/advs.202404348">10.1002/advs.202404348</a>.
  short: M. Nowakowski, M. Huber‐Gedert, H. Elgabarty, A. Kalinko, J. Kubicki, A.
    Kertmen, N. Lindner, D. Khakhulin, F.A. Lima, T. Choi, M. Biednov, L. Schmitz,
    N. Piergies, P. Zalden, K. Kubicek, A. Rodriguez‐Fernandez, M.A. Salem, S.E. Canton,
    C. Bressler, T.D. Kühne, W. Gawelda, M. Bauer, Advanced Science (2024).
date_created: 2024-09-05T11:31:30Z
date_updated: 2025-08-15T12:49:56Z
department:
- _id: '306'
doi: 10.1002/advs.202404348
keyword:
- Photo
- Xray
language:
- iso: eng
publication: Advanced Science
publication_identifier:
  issn:
  - 2198-3844
  - 2198-3844
publication_status: published
publisher: Wiley
status: public
title: Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited State Landscape
  in a Base Metal Dyad
type: journal_article
user_id: '48467'
year: '2024'
...
---
_id: '52346'
abstract:
- lang: eng
  text: Promising cathode materials for fluoride-ion batteries (FIBs) are 3d transition
    metal containing oxides with Ruddlesden-Popper-type structure. So far, multi-elemental
    compositions were not investigated, but could alternate electrochemical performance
    similar to what has been found for cathode materials for lithium-ion batteries.
    Within this study, we investigate RP type La2Ni0.75Co0.25O4.08 as an intercalation-based
    active cathode material for all-solid-state FIBs. We determine the structural
    changes of La2Ni0.75Co0.25O4.08 during fluoride intercalation / de-intercalation
    by ex-situ X-ray diffraction, which showed that F- insertion leads to transformation
    of the parent phase to three different phases. Changes in Ni and Co oxidation
    states and coordination environment were examined by X-ray absorption spectroscopy
    and magnetic measurements in order to understand the complex reaction behaviour
    of the phases in detail, showing that the two transition metals behave differently
    in the charging and discharging process. Under optimized operating conditions,
    a cycle life of 120 cycles at a critical cut-off capacity of 40 mAh g-1 against
    Pb/PbF2 was obtained, which is one of the highest observed for intercalation electrode
    materials in FIBs so far. The average Coulombic efficiencies ranged from 85% to
    90%. Thus, La2Ni0.75Co0.25O4.08 could be a promising candidate for cycling-stable
    high-energy cathode materials for all-solid-state FIBs
author:
- first_name: Vanita
  full_name: Vanita, Vanita
  last_name: Vanita
- first_name: Aamir Iqbal
  full_name: Waidha, Aamir Iqbal
  last_name: Waidha
- first_name: Sami
  full_name: Vasala, Sami
  last_name: Vasala
- first_name: Pascal
  full_name: Puphal, Pascal
  last_name: Puphal
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Pieter
  full_name: Glatzel, Pieter
  last_name: Glatzel
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
- first_name: Oliver
  full_name: Clemens, Oliver
  last_name: Clemens
citation:
  ama: Vanita V, Waidha AI, Vasala S, et al. Insights into the First Multi-Transition-Metal
    Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries.
    <i>Journal of Materials Chemistry A</i>. 2024;(12). doi:<a href="https://doi.org/10.1039/d4ta00704b">10.1039/d4ta00704b</a>
  apa: Vanita, V., Waidha, A. I., Vasala, S., Puphal, P., Schoch, R., Glatzel, P.,
    Bauer, M., &#38; Clemens, O. (2024). Insights into the First Multi-Transition-Metal
    Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries.
    <i>Journal of Materials Chemistry A</i>, <i>12</i>. <a href="https://doi.org/10.1039/d4ta00704b">https://doi.org/10.1039/d4ta00704b</a>
  bibtex: '@article{Vanita_Waidha_Vasala_Puphal_Schoch_Glatzel_Bauer_Clemens_2024,
    title={Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type
    Cathode for all-solid-state Fluoride Ion Batteries}, DOI={<a href="https://doi.org/10.1039/d4ta00704b">10.1039/d4ta00704b</a>},
    number={12}, journal={Journal of Materials Chemistry A}, publisher={Royal Society
    of Chemistry (RSC)}, author={Vanita, Vanita and Waidha, Aamir Iqbal and Vasala,
    Sami and Puphal, Pascal and Schoch, Roland and Glatzel, Pieter and Bauer, Matthias
    and Clemens, Oliver}, year={2024} }'
  chicago: Vanita, Vanita, Aamir Iqbal Waidha, Sami Vasala, Pascal Puphal, Roland
    Schoch, Pieter Glatzel, Matthias Bauer, and Oliver Clemens. “Insights into the
    First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for All-Solid-State
    Fluoride Ion Batteries.” <i>Journal of Materials Chemistry A</i>, no. 12 (2024).
    <a href="https://doi.org/10.1039/d4ta00704b">https://doi.org/10.1039/d4ta00704b</a>.
  ieee: 'V. Vanita <i>et al.</i>, “Insights into the First Multi-Transition-Metal
    Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries,”
    <i>Journal of Materials Chemistry A</i>, no. 12, 2024, doi: <a href="https://doi.org/10.1039/d4ta00704b">10.1039/d4ta00704b</a>.'
  mla: Vanita, Vanita, et al. “Insights into the First Multi-Transition-Metal Containing
    Ruddlesden Popper-Type Cathode for All-Solid-State Fluoride Ion Batteries.” <i>Journal
    of Materials Chemistry A</i>, no. 12, Royal Society of Chemistry (RSC), 2024,
    doi:<a href="https://doi.org/10.1039/d4ta00704b">10.1039/d4ta00704b</a>.
  short: V. Vanita, A.I. Waidha, S. Vasala, P. Puphal, R. Schoch, P. Glatzel, M. Bauer,
    O. Clemens, Journal of Materials Chemistry A (2024).
date_created: 2024-03-07T10:01:09Z
date_updated: 2025-08-15T12:50:31Z
department:
- _id: '306'
doi: 10.1039/d4ta00704b
issue: '12'
keyword:
- Xray
language:
- iso: eng
publication: Journal of Materials Chemistry A
publication_identifier:
  issn:
  - 2050-7488
  - 2050-7496
publication_status: published
publisher: Royal Society of Chemistry (RSC)
status: public
title: Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type
  Cathode for all-solid-state Fluoride Ion Batteries
type: journal_article
user_id: '48467'
year: '2024'
...
---
_id: '60216'
abstract:
- lang: eng
  text: Hydride donors such as DIBAL or CuH react with ZnO and ZrO2 via hydrogen spillover.
    This suggests that hydrogen spillover in catalysts based on these metal oxides
    may take place via initial hydride transfer and not via proton–electron transfer.
author:
- first_name: Michael
  full_name: Benz, Michael
  last_name: Benz
- first_name: Osman
  full_name: Bunjaku, Osman
  last_name: Bunjaku
- first_name: Michał
  full_name: Nowakowski, Michał
  id: '78878'
  last_name: Nowakowski
  orcid: 0000-0002-3734-7011
- first_name: Alexander
  full_name: Allgaier, Alexander
  last_name: Allgaier
- first_name: Indro
  full_name: Biswas, Indro
  last_name: Biswas
- first_name: Joris
  full_name: van Slageren, Joris
  last_name: van Slageren
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
- first_name: Deven P.
  full_name: Estes, Deven P.
  last_name: Estes
citation:
  ama: 'Benz M, Bunjaku O, Nowakowski M, et al. Hydrogen spillover through hydride
    transfer: the reaction of ZnO and ZrO2 with strong hydride donors. <i>Catalysis
    Science &#38; Technology</i>. 2024;14(20):5854-5863. doi:<a href="https://doi.org/10.1039/d4cy00504j">10.1039/d4cy00504j</a>'
  apa: 'Benz, M., Bunjaku, O., Nowakowski, M., Allgaier, A., Biswas, I., van Slageren,
    J., Bauer, M., &#38; Estes, D. P. (2024). Hydrogen spillover through hydride transfer:
    the reaction of ZnO and ZrO2 with strong hydride donors. <i>Catalysis Science
    &#38; Technology</i>, <i>14</i>(20), 5854–5863. <a href="https://doi.org/10.1039/d4cy00504j">https://doi.org/10.1039/d4cy00504j</a>'
  bibtex: '@article{Benz_Bunjaku_Nowakowski_Allgaier_Biswas_van Slageren_Bauer_Estes_2024,
    title={Hydrogen spillover through hydride transfer: the reaction of ZnO and ZrO2
    with strong hydride donors}, volume={14}, DOI={<a href="https://doi.org/10.1039/d4cy00504j">10.1039/d4cy00504j</a>},
    number={20}, journal={Catalysis Science &#38; Technology}, publisher={Royal Society
    of Chemistry (RSC)}, author={Benz, Michael and Bunjaku, Osman and Nowakowski,
    Michał and Allgaier, Alexander and Biswas, Indro and van Slageren, Joris and Bauer,
    Matthias and Estes, Deven P.}, year={2024}, pages={5854–5863} }'
  chicago: 'Benz, Michael, Osman Bunjaku, Michał Nowakowski, Alexander Allgaier, Indro
    Biswas, Joris van Slageren, Matthias Bauer, and Deven P. Estes. “Hydrogen Spillover
    through Hydride Transfer: The Reaction of ZnO and ZrO2 with Strong Hydride Donors.”
    <i>Catalysis Science &#38; Technology</i> 14, no. 20 (2024): 5854–63. <a href="https://doi.org/10.1039/d4cy00504j">https://doi.org/10.1039/d4cy00504j</a>.'
  ieee: 'M. Benz <i>et al.</i>, “Hydrogen spillover through hydride transfer: the
    reaction of ZnO and ZrO2 with strong hydride donors,” <i>Catalysis Science &#38;
    Technology</i>, vol. 14, no. 20, pp. 5854–5863, 2024, doi: <a href="https://doi.org/10.1039/d4cy00504j">10.1039/d4cy00504j</a>.'
  mla: 'Benz, Michael, et al. “Hydrogen Spillover through Hydride Transfer: The Reaction
    of ZnO and ZrO2 with Strong Hydride Donors.” <i>Catalysis Science &#38; Technology</i>,
    vol. 14, no. 20, Royal Society of Chemistry (RSC), 2024, pp. 5854–63, doi:<a href="https://doi.org/10.1039/d4cy00504j">10.1039/d4cy00504j</a>.'
  short: M. Benz, O. Bunjaku, M. Nowakowski, A. Allgaier, I. Biswas, J. van Slageren,
    M. Bauer, D.P. Estes, Catalysis Science &#38; Technology 14 (2024) 5854–5863.
date_created: 2025-06-16T08:55:24Z
date_updated: 2025-08-15T12:42:34Z
department:
- _id: '306'
doi: 10.1039/d4cy00504j
intvolume: '        14'
issue: '20'
keyword:
- Xray
language:
- iso: eng
page: 5854-5863
publication: Catalysis Science & Technology
publication_identifier:
  issn:
  - 2044-4753
  - 2044-4761
publication_status: published
publisher: Royal Society of Chemistry (RSC)
status: public
title: 'Hydrogen spillover through hydride transfer: the reaction of ZnO and ZrO2
  with strong hydride donors'
type: journal_article
user_id: '48467'
volume: 14
year: '2024'
...
---
_id: '54024'
abstract:
- lang: eng
  text: Transition metal complexes, particularly copper hydrides, play an important
    role in various catalytic processes and molecular inorganic chemistry. This study
    employs synchrotron hard X‐ray spectroscopy to gain insights into the geometric
    and electronic properties of copper hydrides as potential catalysts for CO2 hydrogenation.
    The potential of high energy resolution X‐ray absorption near‐edge structure (HERFD‐XANES)
    and valence‐to‐core X‐ray emission (VtC‐XES) is demonstrated with measurement
    on Stryker's reagent (Cu6H6) and [Cu3(μ3‐H)(dpmppe)2](PF6)2 (Cu3H), alongside
    a non‐hydride copper compound (Cu‐I). The XANES analysis reveals that coordination
    geometries strongly influence the spectra, providing only indirect details about
    hydride coordination. The VtC‐XES analysis exhibits a distinct signal around 8975
    eV, offering a diagnostic tool to identify hydride ligands. Theoretical calculations
    support and extend these findings by comparing hydride‐containing complexes with
    their hydride‐free counterparts.
article_type: original
author:
- first_name: Lorena
  full_name: Fritsch, Lorena
  id: '44418'
  last_name: Fritsch
- first_name: Pia
  full_name: Rehsies, Pia
  id: '46959'
  last_name: Rehsies
- first_name: Wael
  full_name: Barakat, Wael
  last_name: Barakat
- first_name: Deven P.
  full_name: Estes, Deven P.
  last_name: Estes
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Fritsch L, Rehsies P, Barakat W, Estes DP, Bauer M. Detection and Characterization
    of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy. <i>Chemistry
    – A European Journal</i>. 2024;30(36). doi:<a href="https://doi.org/10.1002/chem.202400357">10.1002/chem.202400357</a>
  apa: Fritsch, L., Rehsies, P., Barakat, W., Estes, D. P., &#38; Bauer, M. (2024).
    Detection and Characterization of Hydride Ligands in Copper Complexes by Hard
    X‐ray Spectroscopy. <i>Chemistry – A European Journal</i>, <i>30</i>(36). <a href="https://doi.org/10.1002/chem.202400357">https://doi.org/10.1002/chem.202400357</a>
  bibtex: '@article{Fritsch_Rehsies_Barakat_Estes_Bauer_2024, title={Detection and
    Characterization of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy},
    volume={30}, DOI={<a href="https://doi.org/10.1002/chem.202400357">10.1002/chem.202400357</a>},
    number={36}, journal={Chemistry – A European Journal}, publisher={Wiley}, author={Fritsch,
    Lorena and Rehsies, Pia and Barakat, Wael and Estes, Deven P. and Bauer, Matthias},
    year={2024} }'
  chicago: Fritsch, Lorena, Pia Rehsies, Wael Barakat, Deven P. Estes, and Matthias
    Bauer. “Detection and Characterization of Hydride Ligands in Copper Complexes
    by Hard X‐ray Spectroscopy.” <i>Chemistry – A European Journal</i> 30, no. 36
    (2024). <a href="https://doi.org/10.1002/chem.202400357">https://doi.org/10.1002/chem.202400357</a>.
  ieee: 'L. Fritsch, P. Rehsies, W. Barakat, D. P. Estes, and M. Bauer, “Detection
    and Characterization of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy,”
    <i>Chemistry – A European Journal</i>, vol. 30, no. 36, 2024, doi: <a href="https://doi.org/10.1002/chem.202400357">10.1002/chem.202400357</a>.'
  mla: Fritsch, Lorena, et al. “Detection and Characterization of Hydride Ligands
    in Copper Complexes by Hard X‐ray Spectroscopy.” <i>Chemistry – A European Journal</i>,
    vol. 30, no. 36, Wiley, 2024, doi:<a href="https://doi.org/10.1002/chem.202400357">10.1002/chem.202400357</a>.
  short: L. Fritsch, P. Rehsies, W. Barakat, D.P. Estes, M. Bauer, Chemistry – A European
    Journal 30 (2024).
date_created: 2024-05-07T08:41:11Z
date_updated: 2025-08-15T12:51:10Z
department:
- _id: '306'
doi: 10.1002/chem.202400357
intvolume: '        30'
issue: '36'
keyword:
- Xray
language:
- iso: eng
publication: Chemistry – A European Journal
publication_identifier:
  issn:
  - 0947-6539
  - 1521-3765
publication_status: published
publisher: Wiley
status: public
title: Detection and Characterization of Hydride Ligands in Copper Complexes by Hard
  X‐ray Spectroscopy
type: journal_article
user_id: '48467'
volume: 30
year: '2024'
...
---
_id: '54969'
abstract:
- lang: eng
  text: This work presents a new and facile route for the preparation of iron oxide-based
    catalysts supported on alumina, which enables the targeted synthesis of catalysts
    with an increased amount of isolated tetrahedrally coordinated iron centers compared
    to a conventional impregnation procedure, and therefore leads to an increase in
    activity for CO oxidation reaction. By a multi-step impregnation–calcination protocol,
    the catalysts were synthesized with iron loadings of between 1 and 10 wt%, and
    their catalytic activity was then compared with a 10 wt% loaded catalyst prepared
    by conventional single impregnation. With a loading of 8 wt%, the presented catalysts
    showed an improved catalytic activity regarding light-off and full conversion
    temperatures compared to this reference. Through the application of several analytical
    methods (PXRD, PDF, DRUVS, SEM, XAFS), the improved catalytic activity can be
    correlated with an increased amount of isolated iron centers and a significantly
    reduced fraction of agglomerates or particles.
article_number: '416'
article_type: original
author:
- first_name: Steffen
  full_name: Schlicher, Steffen
  last_name: Schlicher
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Nils
  full_name: Prinz, Nils
  last_name: Prinz
- first_name: Mirijam
  full_name: Zobel, Mirijam
  last_name: Zobel
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Schlicher S, Schoch R, Prinz N, Zobel M, Bauer M. New and Facile Preparation
    Method for Highly Active Iron Oxide Catalysts for CO Oxidation. <i>Catalysts</i>.
    2024;14(7). doi:<a href="https://doi.org/10.3390/catal14070416">10.3390/catal14070416</a>
  apa: Schlicher, S., Schoch, R., Prinz, N., Zobel, M., &#38; Bauer, M. (2024). New
    and Facile Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation.
    <i>Catalysts</i>, <i>14</i>(7), Article 416. <a href="https://doi.org/10.3390/catal14070416">https://doi.org/10.3390/catal14070416</a>
  bibtex: '@article{Schlicher_Schoch_Prinz_Zobel_Bauer_2024, title={New and Facile
    Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation}, volume={14},
    DOI={<a href="https://doi.org/10.3390/catal14070416">10.3390/catal14070416</a>},
    number={7416}, journal={Catalysts}, publisher={MDPI AG}, author={Schlicher, Steffen
    and Schoch, Roland and Prinz, Nils and Zobel, Mirijam and Bauer, Matthias}, year={2024}
    }'
  chicago: Schlicher, Steffen, Roland Schoch, Nils Prinz, Mirijam Zobel, and Matthias
    Bauer. “New and Facile Preparation Method for Highly Active Iron Oxide Catalysts
    for CO Oxidation.” <i>Catalysts</i> 14, no. 7 (2024). <a href="https://doi.org/10.3390/catal14070416">https://doi.org/10.3390/catal14070416</a>.
  ieee: 'S. Schlicher, R. Schoch, N. Prinz, M. Zobel, and M. Bauer, “New and Facile
    Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation,” <i>Catalysts</i>,
    vol. 14, no. 7, Art. no. 416, 2024, doi: <a href="https://doi.org/10.3390/catal14070416">10.3390/catal14070416</a>.'
  mla: Schlicher, Steffen, et al. “New and Facile Preparation Method for Highly Active
    Iron Oxide Catalysts for CO Oxidation.” <i>Catalysts</i>, vol. 14, no. 7, 416,
    MDPI AG, 2024, doi:<a href="https://doi.org/10.3390/catal14070416">10.3390/catal14070416</a>.
  short: S. Schlicher, R. Schoch, N. Prinz, M. Zobel, M. Bauer, Catalysts 14 (2024).
date_created: 2024-07-02T07:10:14Z
date_updated: 2025-08-15T12:50:52Z
department:
- _id: '306'
doi: 10.3390/catal14070416
intvolume: '        14'
issue: '7'
keyword:
- Catalysis
language:
- iso: eng
publication: Catalysts
publication_identifier:
  issn:
  - 2073-4344
publication_status: published
publisher: MDPI AG
status: public
title: New and Facile Preparation Method for Highly Active Iron Oxide Catalysts for
  CO Oxidation
type: journal_article
user_id: '48467'
volume: 14
year: '2024'
...
---
_id: '52345'
abstract:
- lang: eng
  text: Photoactive chromium(III) complexes saw a conceptual breakthrough with the
    discovery of the prototypical molecular ruby mer-[Cr(ddpd)2]3+ (ddpd = N,N′-dimethyl-N,N′-dipyridin-2-ylpyridine-2,6-diamine),
    which shows intense long-lived near-infrared (NIR) phosphorescence from metal-centered
    spin-flip states. In contrast to the numerous studies on chromium(III) photophysics,
    only 10 luminescent molybdenum(III) complexes have been reported so far. Here,
    we present the synthesis and characterization of mer-MoX3(ddpd) (1, X = Cl; 2,
    X = Br) and cisfac-[Mo(ddpd)2]3+ (cisfac-[3]3+), an isomeric heavy homologue of
    the prototypical molecular ruby. For cisfac-[3]3+, we found strong zero-field
    splitting using magnetic susceptibility measurements and electron paramagnetic
    resonance spectroscopy. Electronic spectra covering the spin-forbidden transitions
    show that the spin-flip states in mer-1, mer-2, and cisfac-[3]3+ are much lower
    in energy than those in comparable chromium(III) compounds. While all three complexes
    show weak spin-flip phosphorescence in NIR-II, the emission of cisfac-[3]3+ peaking
    at 1550 nm is particularly low in energy. Femtosecond transient absorption spectroscopy
    reveals a short excited-state lifetime of 1.4 ns, 6 orders of magnitude shorter
    than that of mer-[Cr(ddpd)2]3+. Using density functional theory and ab initio
    multireference calculations, we break down the reasons for this disparity and
    derive principles for the design of future stable photoactive molybdenum(III)
    complexes.
article_type: original
author:
- first_name: Winald R.
  full_name: Kitzmann, Winald R.
  last_name: Kitzmann
- first_name: David
  full_name: Hunger, David
  last_name: Hunger
- first_name: Antti-Pekka M.
  full_name: Reponen, Antti-Pekka M.
  last_name: Reponen
- first_name: Christoph
  full_name: Förster, Christoph
  last_name: Förster
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
- first_name: Sascha
  full_name: Feldmann, Sascha
  last_name: Feldmann
- first_name: Joris
  full_name: van Slageren, Joris
  last_name: van Slageren
- first_name: Katja
  full_name: Heinze, Katja
  last_name: Heinze
citation:
  ama: Kitzmann WR, Hunger D, Reponen A-PM, et al. Electronic Structure and Excited-State
    Dynamics of the NIR-II Emissive Molybdenum(III) Analogue to the Molecular Ruby.
    <i>Inorganic Chemistry</i>. 2023;62(39):15797-15808. doi:<a href="https://doi.org/10.1021/acs.inorgchem.3c02186">10.1021/acs.inorgchem.3c02186</a>
  apa: Kitzmann, W. R., Hunger, D., Reponen, A.-P. M., Förster, C., Schoch, R., Bauer,
    M., Feldmann, S., van Slageren, J., &#38; Heinze, K. (2023). Electronic Structure
    and Excited-State Dynamics of the NIR-II Emissive Molybdenum(III) Analogue to
    the Molecular Ruby. <i>Inorganic Chemistry</i>, <i>62</i>(39), 15797–15808. <a
    href="https://doi.org/10.1021/acs.inorgchem.3c02186">https://doi.org/10.1021/acs.inorgchem.3c02186</a>
  bibtex: '@article{Kitzmann_Hunger_Reponen_Förster_Schoch_Bauer_Feldmann_van Slageren_Heinze_2023,
    title={Electronic Structure and Excited-State Dynamics of the NIR-II Emissive
    Molybdenum(III) Analogue to the Molecular Ruby}, volume={62}, DOI={<a href="https://doi.org/10.1021/acs.inorgchem.3c02186">10.1021/acs.inorgchem.3c02186</a>},
    number={39}, journal={Inorganic Chemistry}, publisher={American Chemical Society
    (ACS)}, author={Kitzmann, Winald R. and Hunger, David and Reponen, Antti-Pekka
    M. and Förster, Christoph and Schoch, Roland and Bauer, Matthias and Feldmann,
    Sascha and van Slageren, Joris and Heinze, Katja}, year={2023}, pages={15797–15808}
    }'
  chicago: 'Kitzmann, Winald R., David Hunger, Antti-Pekka M. Reponen, Christoph Förster,
    Roland Schoch, Matthias Bauer, Sascha Feldmann, Joris van Slageren, and Katja
    Heinze. “Electronic Structure and Excited-State Dynamics of the NIR-II Emissive
    Molybdenum(III) Analogue to the Molecular Ruby.” <i>Inorganic Chemistry</i> 62,
    no. 39 (2023): 15797–808. <a href="https://doi.org/10.1021/acs.inorgchem.3c02186">https://doi.org/10.1021/acs.inorgchem.3c02186</a>.'
  ieee: 'W. R. Kitzmann <i>et al.</i>, “Electronic Structure and Excited-State Dynamics
    of the NIR-II Emissive Molybdenum(III) Analogue to the Molecular Ruby,” <i>Inorganic
    Chemistry</i>, vol. 62, no. 39, pp. 15797–15808, 2023, doi: <a href="https://doi.org/10.1021/acs.inorgchem.3c02186">10.1021/acs.inorgchem.3c02186</a>.'
  mla: Kitzmann, Winald R., et al. “Electronic Structure and Excited-State Dynamics
    of the NIR-II Emissive Molybdenum(III) Analogue to the Molecular Ruby.” <i>Inorganic
    Chemistry</i>, vol. 62, no. 39, American Chemical Society (ACS), 2023, pp. 15797–808,
    doi:<a href="https://doi.org/10.1021/acs.inorgchem.3c02186">10.1021/acs.inorgchem.3c02186</a>.
  short: W.R. Kitzmann, D. Hunger, A.-P.M. Reponen, C. Förster, R. Schoch, M. Bauer,
    S. Feldmann, J. van Slageren, K. Heinze, Inorganic Chemistry 62 (2023) 15797–15808.
date_created: 2024-03-07T09:57:30Z
date_updated: 2024-03-07T10:02:58Z
department:
- _id: '306'
doi: 10.1021/acs.inorgchem.3c02186
intvolume: '        62'
issue: '39'
keyword:
- Inorganic Chemistry
- Physical and Theoretical Chemistry
language:
- iso: eng
page: 15797-15808
publication: Inorganic Chemistry
publication_identifier:
  issn:
  - 0020-1669
  - 1520-510X
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Electronic Structure and Excited-State Dynamics of the NIR-II Emissive Molybdenum(III)
  Analogue to the Molecular Ruby
type: journal_article
user_id: '48467'
volume: 62
year: '2023'
...
---
_id: '53434'
abstract:
- lang: eng
  text: Im Rahmen dieser Dissertation wurden Katalysatoren, welche auf der thermischen
    Zersetzung von metallorganischen Gerüstverbindungen basieren, mittels Röntgenabsorptionsspektroskopie
    (XAS) und Röntgenemissionsspektroskopie (XES) untersucht. Durch diesen synthetischen
    Ansatz können hochdisperse Ni-basierte Katalysatoren eingebettet in einer Kohlenstoffmatrix
    gewonnen werden, welche für die Methanisierung von CO2 Einsatz finden. Diese sollen
    eine hohe Stabilität gegenüber Wasserstoffausfällen aufweisen, welche bedingt
    durch Wetterfluktuationen in der Gewinnung von grünem Wasserstoff auftreten. Um
    ein derartiges System gezielt gestalten zu können, ist ein detailliertes Verständnis
    zugrundeliegender chemischer Mechanismen und damit einhergehend elektronischer
    Strukturen der Katalysatorsysteme notwendig. Durch die detaillierte Analyse der
    Katalysator-Vorstufen mittels XAS konnte gezeigt werden, dass auch unter reduktiven
    Bedingungen in der thermischen Zersetzung Spuren von Ni(II) vorliegen und keine
    reine Nifcc-Struktur erreicht werden konnte. Eine detaillierte Auswertung der
    gleichen Präkatalysatoren mittels XES konnte durch eine neuartige Kombination
    von HERFD-XANES, theoretischer Berechnungen und VtC-XES einen eindeutigen Beweis
    für das Vorhandensein der gewünschten Kohlenstoffmatrix sowie Spuren von NiO im
    Präkatalysator liefern, welche sich vorteilhaft auf die spätere Aktivität im finalen
    Katalysator auswirken. Abschließend konnte mittels einer in-situ Untersuchung
    der Temperaturbereich, in dem sich die aktive Katalysatorspezies ausbildet, auf
    80 bis 200 C eingegrenzt werden. Schließlich konnte ein eindeutiger Zusammenhang
    zwischen dem Verlust einer stabilisierenden Kohlenstoffschicht und einem Rückgang
    der Aktivität belegt werden.
- lang: eng
  text: This work aimed to establish methods based on X-ray absorption (XAS) and emission
    spectroscopy (XES) to study Ni-based catalysts obtained by the thermal decomposition
    of metal-organic framework compounds. Through the chosen synthetic approach, highly
    dispersed Ni-based catalysts embedded in a carbon matrix were obtained, suitable
    for the methanation of CO2. These catalysts are targeted to be highly stable against
    hydrogen dropouts that can occur due to weather fluctuations during the production
    of green hydrogen using water electrolysis. However, a detailed understanding
    of the underlying chemical mechanisms and the associated electronic structures
    of the catalyst systems is necessary to design such a system in a targeted manner.
    Detailed analysis of the catalyst precursor by XAS showed that although a suitable
    pre-catalyst can be prepared even under mildly reducing conditions, traces of
    Ni(II) are still present under reducing conditions during thermal decomposition,
    and a pure Nifcc structure was not achieved. Detailed XES analysis of the same
    pre-catalysts, using a novel combination of HERFD-XANES, theoretical calculations,
    and VtC-XES, provided clear evidence for the presence of the desired carbon matrix,
    as well as traces of NiO in the pre-catalyst, which has a beneficial effect on
    the subsequent activity in the final catalyst. Finally, by in-situ investigation,
    the temperature range in which the active catalyst species is formed could be
    narrowed down to 80 to 200 C. Furthermore, a clear correlation was proven between
    the loss of a stabilizing carbon layer and decreased activity.
author:
- first_name: Sven
  full_name: Strübbe, Sven
  last_name: Strübbe
citation:
  ama: Strübbe S. <i>Investigations of Ni-Based Methanation Catalysts under Dynamic
    Conditions via Hard X-Ray Spectroscopy</i>. Universitätsbibliothek Paderborn;
    2023. doi:<a href="https://doi.org/10.17619/UNIPB/1-1752">10.17619/UNIPB/1-1752</a>
  apa: Strübbe, S. (2023). <i>Investigations of Ni-based methanation catalysts under
    dynamic conditions via hard X-ray spectroscopy</i>. Universitätsbibliothek Paderborn.
    <a href="https://doi.org/10.17619/UNIPB/1-1752">https://doi.org/10.17619/UNIPB/1-1752</a>
  bibtex: '@book{Strübbe_2023, title={Investigations of Ni-based methanation catalysts
    under dynamic conditions via hard X-ray spectroscopy}, DOI={<a href="https://doi.org/10.17619/UNIPB/1-1752">10.17619/UNIPB/1-1752</a>},
    publisher={Universitätsbibliothek Paderborn}, author={Strübbe, Sven}, year={2023}
    }'
  chicago: Strübbe, Sven. <i>Investigations of Ni-Based Methanation Catalysts under
    Dynamic Conditions via Hard X-Ray Spectroscopy</i>. Universitätsbibliothek Paderborn,
    2023. <a href="https://doi.org/10.17619/UNIPB/1-1752">https://doi.org/10.17619/UNIPB/1-1752</a>.
  ieee: S. Strübbe, <i>Investigations of Ni-based methanation catalysts under dynamic
    conditions via hard X-ray spectroscopy</i>. Universitätsbibliothek Paderborn,
    2023.
  mla: Strübbe, Sven. <i>Investigations of Ni-Based Methanation Catalysts under Dynamic
    Conditions via Hard X-Ray Spectroscopy</i>. Universitätsbibliothek Paderborn,
    2023, doi:<a href="https://doi.org/10.17619/UNIPB/1-1752">10.17619/UNIPB/1-1752</a>.
  short: S. Strübbe, Investigations of Ni-Based Methanation Catalysts under Dynamic
    Conditions via Hard X-Ray Spectroscopy, Universitätsbibliothek Paderborn, 2023.
date_created: 2024-04-11T14:00:57Z
date_updated: 2024-04-11T14:05:40Z
ddc:
- '540'
department:
- _id: '306'
doi: 10.17619/UNIPB/1-1752
language:
- iso: eng
page: '198'
publication_status: published
publisher: Universitätsbibliothek Paderborn
status: public
title: Investigations of Ni-based methanation catalysts under dynamic conditions via
  hard X-ray spectroscopy
type: dissertation
user_id: '76968'
year: '2023'
...
---
_id: '52344'
abstract:
- lang: eng
  text: Macrocyclization reactions are still challenging due to competing oligomerization,
    which requires the use of small substrate concentrations. Here, the cationic tungsten
    imido and tungsten oxo alkylidene N-heterocyclic carbene complexes [[W(N-2,6-Cl2-C6H3)(CHCMe2Ph(OC6F5)(pivalonitrile)(IMes)+
    B(ArF)4−] (W1) and [W(O)(CHCMe2Ph(OCMe(CF3)2)(IMes)(CH3CN)+ B(ArF)4−] (W2) (IMes=1,3-dimesitylimidazol-2-ylidene;
    B(ArF)4−=tetrakis(3,5-bis(trifluoromethyl)phenyl borate) have been immobilized
    inside the pores of ordered mesoporous silica (OMS) with pore diameters of 3.3
    and 6.8 nm, respectively, using a pore-selective immobilization protocol. X-ray
    absorption spectroscopy of W1@OMS showed that even though the catalyst structure
    is contracted due to confinement by the mesopores, both the oxidation state and
    structure of the catalyst stayed intact upon immobilization. Catalytic testing
    with four differently sized α,ω-dienes revealed a dramatically increased macrocyclization
    (MC) and Z-selectivity of the supported catalysts compared to the homogenous progenitors,
    allowing high substrate concentrations of 25 mM. With the supported complexes,
    a maximum increase in MC-selectivity from 27 to 81 % and in Z-selectivity from
    17 to 34 % was achieved. In general, smaller mesopores exhibited a stronger confinement
    effect. A comparison of the two supported tungsten-based catalysts showed that
    W1@OMS possesses a higher MC-selectivity, while W2@OMS exhibits a higher Z-selectivity
    which can be rationalized by the structures of the catalysts.
article_type: original
author:
- first_name: Felix
  full_name: Ziegler, Felix
  last_name: Ziegler
- first_name: Johanna R.
  full_name: Bruckner, Johanna R.
  last_name: Bruckner
- first_name: Michał
  full_name: Nowakowski, Michał
  id: '78878'
  last_name: Nowakowski
  orcid: 0000-0002-3734-7011
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
- first_name: Patrick
  full_name: Probst, Patrick
  last_name: Probst
- first_name: Boshra
  full_name: Atwi, Boshra
  last_name: Atwi
- first_name: Michael R.
  full_name: Buchmeiser, Michael R.
  last_name: Buchmeiser
citation:
  ama: Ziegler F, Bruckner JR, Nowakowski M, et al. Macrocyclization of Dienes under
    Confinement with Cationic Tungsten Imido/Oxo Alkylidene <i>N</i>‐Heterocyclic
    Carbene Complexes. <i>ChemCatChem</i>. 2023;15(21). doi:<a href="https://doi.org/10.1002/cctc.202300871">10.1002/cctc.202300871</a>
  apa: Ziegler, F., Bruckner, J. R., Nowakowski, M., Bauer, M., Probst, P., Atwi,
    B., &#38; Buchmeiser, M. R. (2023). Macrocyclization of Dienes under Confinement
    with Cationic Tungsten Imido/Oxo Alkylidene <i>N</i>‐Heterocyclic Carbene Complexes.
    <i>ChemCatChem</i>, <i>15</i>(21). <a href="https://doi.org/10.1002/cctc.202300871">https://doi.org/10.1002/cctc.202300871</a>
  bibtex: '@article{Ziegler_Bruckner_Nowakowski_Bauer_Probst_Atwi_Buchmeiser_2023,
    title={Macrocyclization of Dienes under Confinement with Cationic Tungsten Imido/Oxo
    Alkylidene <i>N</i>‐Heterocyclic Carbene Complexes}, volume={15}, DOI={<a href="https://doi.org/10.1002/cctc.202300871">10.1002/cctc.202300871</a>},
    number={21}, journal={ChemCatChem}, publisher={Wiley}, author={Ziegler, Felix
    and Bruckner, Johanna R. and Nowakowski, Michał and Bauer, Matthias and Probst,
    Patrick and Atwi, Boshra and Buchmeiser, Michael R.}, year={2023} }'
  chicago: Ziegler, Felix, Johanna R. Bruckner, Michał Nowakowski, Matthias Bauer,
    Patrick Probst, Boshra Atwi, and Michael R. Buchmeiser. “Macrocyclization of Dienes
    under Confinement with Cationic Tungsten Imido/Oxo Alkylidene <i>N</i>‐Heterocyclic
    Carbene Complexes.” <i>ChemCatChem</i> 15, no. 21 (2023). <a href="https://doi.org/10.1002/cctc.202300871">https://doi.org/10.1002/cctc.202300871</a>.
  ieee: 'F. Ziegler <i>et al.</i>, “Macrocyclization of Dienes under Confinement with
    Cationic Tungsten Imido/Oxo Alkylidene <i>N</i>‐Heterocyclic Carbene Complexes,”
    <i>ChemCatChem</i>, vol. 15, no. 21, 2023, doi: <a href="https://doi.org/10.1002/cctc.202300871">10.1002/cctc.202300871</a>.'
  mla: Ziegler, Felix, et al. “Macrocyclization of Dienes under Confinement with Cationic
    Tungsten Imido/Oxo Alkylidene <i>N</i>‐Heterocyclic Carbene Complexes.” <i>ChemCatChem</i>,
    vol. 15, no. 21, Wiley, 2023, doi:<a href="https://doi.org/10.1002/cctc.202300871">10.1002/cctc.202300871</a>.
  short: F. Ziegler, J.R. Bruckner, M. Nowakowski, M. Bauer, P. Probst, B. Atwi, M.R.
    Buchmeiser, ChemCatChem 15 (2023).
date_created: 2024-03-07T09:44:33Z
date_updated: 2024-05-07T11:41:51Z
department:
- _id: '306'
doi: 10.1002/cctc.202300871
intvolume: '        15'
issue: '21'
keyword:
- Inorganic Chemistry
- Organic Chemistry
- Physical and Theoretical Chemistry
- Catalysis
language:
- iso: eng
publication: ChemCatChem
publication_identifier:
  issn:
  - 1867-3880
  - 1867-3899
publication_status: published
publisher: Wiley
status: public
title: Macrocyclization of Dienes under Confinement with Cationic Tungsten Imido/Oxo
  Alkylidene <i>N</i>‐Heterocyclic Carbene Complexes
type: journal_article
user_id: '48467'
volume: 15
year: '2023'
...
---
_id: '46481'
abstract:
- lang: eng
  text: <jats:title>Abstract</jats:title><jats:p>Although iron is a dream candidate
    to substitute noble metals in photoactive complexes, realization of emissive and
    photoactive iron compounds is demanding due to the fast deactivation of their
    charge-transfer states. Emissive iron compounds are scarce and dual emission has
    not been observed before. Here we report the Fe<jats:sup>III</jats:sup> complex
    [Fe(ImP)<jats:sub>2</jats:sub>][PF<jats:sub>6</jats:sub>] (HImP = 1,1′-(1,3-phenylene)bis(3-methyl-1-imidazol-2-ylidene)),
    showing a Janus-type dual emission from ligand-to-metal charge transfer (LMCT)-
    and metal-to-ligand charge transfer (MLCT)-dominated states. This behaviour is
    achieved by a ligand design that combines four <jats:italic>N</jats:italic>-heterocyclic
    carbenes with two cyclometalating aryl units. The low-lying <jats:italic>π</jats:italic>*
    levels of the cyclometalating units lead to energetically accessible MLCT states
    that cannot evolve into LMCT states. With a lifetime of 4.6 ns, the strongly reducing
    and oxidizing MLCT-dominated state can initiate electron transfer reactions, which
    could constitute a basis for future applications of iron in photoredox catalysis.</jats:p>
author:
- first_name: Jakob
  full_name: Steube, Jakob
  id: '40342'
  last_name: Steube
  orcid: 0000-0003-3178-4429
- first_name: Ayla
  full_name: Kruse, Ayla
  last_name: Kruse
- first_name: Olga S.
  full_name: Bokareva, Olga S.
  last_name: Bokareva
- first_name: Thomas
  full_name: Reuter, Thomas
  last_name: Reuter
- first_name: Serhiy
  full_name: Demeshko, Serhiy
  last_name: Demeshko
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Miguel A.
  full_name: Argüello Cordero, Miguel A.
  last_name: Argüello Cordero
- first_name: Athul
  full_name: Krishna, Athul
  last_name: Krishna
- first_name: Stephan
  full_name: Hohloch, Stephan
  last_name: Hohloch
- first_name: Franc
  full_name: Meyer, Franc
  last_name: Meyer
- first_name: Katja
  full_name: Heinze, Katja
  last_name: Heinze
- first_name: Oliver
  full_name: Kühn, Oliver
  last_name: Kühn
- first_name: Stefan
  full_name: Lochbrunner, Stefan
  last_name: Lochbrunner
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Steube J, Kruse A, Bokareva OS, et al. Janus-type emission from a cyclometalated
    iron(iii) complex. <i>Nature Chemistry</i>. 2023;15(4):468-474. doi:<a href="https://doi.org/10.1038/s41557-023-01137-w">10.1038/s41557-023-01137-w</a>
  apa: Steube, J., Kruse, A., Bokareva, O. S., Reuter, T., Demeshko, S., Schoch, R.,
    Argüello Cordero, M. A., Krishna, A., Hohloch, S., Meyer, F., Heinze, K., Kühn,
    O., Lochbrunner, S., &#38; Bauer, M. (2023). Janus-type emission from a cyclometalated
    iron(iii) complex. <i>Nature Chemistry</i>, <i>15</i>(4), 468–474. <a href="https://doi.org/10.1038/s41557-023-01137-w">https://doi.org/10.1038/s41557-023-01137-w</a>
  bibtex: '@article{Steube_Kruse_Bokareva_Reuter_Demeshko_Schoch_Argüello Cordero_Krishna_Hohloch_Meyer_et
    al._2023, title={Janus-type emission from a cyclometalated iron(iii) complex},
    volume={15}, DOI={<a href="https://doi.org/10.1038/s41557-023-01137-w">10.1038/s41557-023-01137-w</a>},
    number={4}, journal={Nature Chemistry}, publisher={Springer Science and Business
    Media LLC}, author={Steube, Jakob and Kruse, Ayla and Bokareva, Olga S. and Reuter,
    Thomas and Demeshko, Serhiy and Schoch, Roland and Argüello Cordero, Miguel A.
    and Krishna, Athul and Hohloch, Stephan and Meyer, Franc and et al.}, year={2023},
    pages={468–474} }'
  chicago: 'Steube, Jakob, Ayla Kruse, Olga S. Bokareva, Thomas Reuter, Serhiy Demeshko,
    Roland Schoch, Miguel A. Argüello Cordero, et al. “Janus-Type Emission from a
    Cyclometalated Iron(Iii) Complex.” <i>Nature Chemistry</i> 15, no. 4 (2023): 468–74.
    <a href="https://doi.org/10.1038/s41557-023-01137-w">https://doi.org/10.1038/s41557-023-01137-w</a>.'
  ieee: 'J. Steube <i>et al.</i>, “Janus-type emission from a cyclometalated iron(iii)
    complex,” <i>Nature Chemistry</i>, vol. 15, no. 4, pp. 468–474, 2023, doi: <a
    href="https://doi.org/10.1038/s41557-023-01137-w">10.1038/s41557-023-01137-w</a>.'
  mla: Steube, Jakob, et al. “Janus-Type Emission from a Cyclometalated Iron(Iii)
    Complex.” <i>Nature Chemistry</i>, vol. 15, no. 4, Springer Science and Business
    Media LLC, 2023, pp. 468–74, doi:<a href="https://doi.org/10.1038/s41557-023-01137-w">10.1038/s41557-023-01137-w</a>.
  short: J. Steube, A. Kruse, O.S. Bokareva, T. Reuter, S. Demeshko, R. Schoch, M.A.
    Argüello Cordero, A. Krishna, S. Hohloch, F. Meyer, K. Heinze, O. Kühn, S. Lochbrunner,
    M. Bauer, Nature Chemistry 15 (2023) 468–474.
date_created: 2023-08-11T19:57:32Z
date_updated: 2024-09-05T11:44:07Z
department:
- _id: '306'
doi: 10.1038/s41557-023-01137-w
intvolume: '        15'
issue: '4'
keyword:
- General Chemical Engineering
- General Chemistry
language:
- iso: eng
page: 468-474
publication: Nature Chemistry
publication_identifier:
  issn:
  - 1755-4330
  - 1755-4349
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Janus-type emission from a cyclometalated iron(iii) complex
type: journal_article
user_id: '48467'
volume: 15
year: '2023'
...
---
_id: '40981'
abstract:
- lang: eng
  text: Room temperature sodium-sulfur (RT Na-S) batteries are considered potential
    candidates for stationary power storage applications due to their low cost, broad
    active material availability and low toxicity. Challenges, such as high volume
    expansion of the S-cathode upon discharge, low electronic conductivity of S as
    active material and herewith limited rate capability as well as the shuttling
    of polysulfides (PSs) as intermediates often impede the cycle stability and practical
    application of Na-S batteries. Sulfurized poly(acrylonitrile) (SPAN) inherently
    inhibits the shuttling of PSs and shows compatibility with carbonate-based electrolytes,
    however, its exact redox mechanism remained unclear to date. Herein, we implement
    a commercially available and simple electrolyte into the Na-SPAN cell chemistry
    and demonstrate its high rate and cycle stability. Through the application of
    in situ techniques utilizing electronic impedance spectroscopy (EIS) and X-ray
    absorption spectroscopy (XAS) at different depths of charge and discharge, an
    insight into SPAN’s redox chemistry is obtained.
article_number: '010526'
author:
- first_name: Julian
  full_name: Kappler, Julian
  last_name: Kappler
- first_name: Güldeniz
  full_name: Tonbul, Güldeniz
  id: '89054'
  last_name: Tonbul
  orcid: 0000-0002-0999-9995
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Saravanakumar
  full_name: Murugan, Saravanakumar
  last_name: Murugan
- first_name: Michał
  full_name: Nowakowski, Michał
  id: '78878'
  last_name: Nowakowski
  orcid: 0000-0002-3734-7011
- first_name: Pia Lena
  full_name: Lange, Pia Lena
  last_name: Lange
- first_name: Sina Vanessa
  full_name: Klostermann, Sina Vanessa
  last_name: Klostermann
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
- first_name: Thomas
  full_name: Schleid, Thomas
  last_name: Schleid
- first_name: Johannes
  full_name: Kästner, Johannes
  last_name: Kästner
- first_name: Michael Rudolf
  full_name: Buchmeiser, Michael Rudolf
  last_name: Buchmeiser
citation:
  ama: Kappler J, Tonbul G, Schoch R, et al. Understanding the Redox Mechanism of
    Sulfurized Poly(acrylonitrile) as Highly Rate and Cycle Stable Cathode Material
    for Sodium-Sulfur Batteries. <i>Journal of The Electrochemical Society</i>. 2023;170(1).
    doi:<a href="https://doi.org/10.1149/1945-7111/acb2fa">10.1149/1945-7111/acb2fa</a>
  apa: Kappler, J., Tonbul, G., Schoch, R., Murugan, S., Nowakowski, M., Lange, P.
    L., Klostermann, S. V., Bauer, M., Schleid, T., Kästner, J., &#38; Buchmeiser,
    M. R. (2023). Understanding the Redox Mechanism of Sulfurized Poly(acrylonitrile)
    as Highly Rate and Cycle Stable Cathode Material for Sodium-Sulfur Batteries.
    <i>Journal of The Electrochemical Society</i>, <i>170</i>(1), Article 010526.
    <a href="https://doi.org/10.1149/1945-7111/acb2fa">https://doi.org/10.1149/1945-7111/acb2fa</a>
  bibtex: '@article{Kappler_Tonbul_Schoch_Murugan_Nowakowski_Lange_Klostermann_Bauer_Schleid_Kästner_et
    al._2023, title={Understanding the Redox Mechanism of Sulfurized Poly(acrylonitrile)
    as Highly Rate and Cycle Stable Cathode Material for Sodium-Sulfur Batteries},
    volume={170}, DOI={<a href="https://doi.org/10.1149/1945-7111/acb2fa">10.1149/1945-7111/acb2fa</a>},
    number={1010526}, journal={Journal of The Electrochemical Society}, publisher={The
    Electrochemical Society}, author={Kappler, Julian and Tonbul, Güldeniz and Schoch,
    Roland and Murugan, Saravanakumar and Nowakowski, Michał and Lange, Pia Lena and
    Klostermann, Sina Vanessa and Bauer, Matthias and Schleid, Thomas and Kästner,
    Johannes and et al.}, year={2023} }'
  chicago: Kappler, Julian, Güldeniz Tonbul, Roland Schoch, Saravanakumar Murugan,
    Michał Nowakowski, Pia Lena Lange, Sina Vanessa Klostermann, et al. “Understanding
    the Redox Mechanism of Sulfurized Poly(Acrylonitrile) as Highly Rate and Cycle
    Stable Cathode Material for Sodium-Sulfur Batteries.” <i>Journal of The Electrochemical
    Society</i> 170, no. 1 (2023). <a href="https://doi.org/10.1149/1945-7111/acb2fa">https://doi.org/10.1149/1945-7111/acb2fa</a>.
  ieee: 'J. Kappler <i>et al.</i>, “Understanding the Redox Mechanism of Sulfurized
    Poly(acrylonitrile) as Highly Rate and Cycle Stable Cathode Material for Sodium-Sulfur
    Batteries,” <i>Journal of The Electrochemical Society</i>, vol. 170, no. 1, Art.
    no. 010526, 2023, doi: <a href="https://doi.org/10.1149/1945-7111/acb2fa">10.1149/1945-7111/acb2fa</a>.'
  mla: Kappler, Julian, et al. “Understanding the Redox Mechanism of Sulfurized Poly(Acrylonitrile)
    as Highly Rate and Cycle Stable Cathode Material for Sodium-Sulfur Batteries.”
    <i>Journal of The Electrochemical Society</i>, vol. 170, no. 1, 010526, The Electrochemical
    Society, 2023, doi:<a href="https://doi.org/10.1149/1945-7111/acb2fa">10.1149/1945-7111/acb2fa</a>.
  short: J. Kappler, G. Tonbul, R. Schoch, S. Murugan, M. Nowakowski, P.L. Lange,
    S.V. Klostermann, M. Bauer, T. Schleid, J. Kästner, M.R. Buchmeiser, Journal of
    The Electrochemical Society 170 (2023).
date_created: 2023-01-30T16:08:15Z
date_updated: 2023-05-03T08:27:13Z
department:
- _id: '35'
- _id: '306'
doi: 10.1149/1945-7111/acb2fa
intvolume: '       170'
issue: '1'
keyword:
- Materials Chemistry
- Electrochemistry
- Surfaces
- Coatings and Films
- Condensed Matter Physics
- Renewable Energy
- Sustainability and the Environment
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
publication: Journal of The Electrochemical Society
publication_identifier:
  issn:
  - 0013-4651
  - 1945-7111
publication_status: published
publisher: The Electrochemical Society
status: public
title: Understanding the Redox Mechanism of Sulfurized Poly(acrylonitrile) as Highly
  Rate and Cycle Stable Cathode Material for Sodium-Sulfur Batteries
type: journal_article
user_id: '89054'
volume: 170
year: '2023'
...
---
_id: '44380'
author:
- first_name: Güldeniz
  full_name: Tonbul, Güldeniz
  id: '89054'
  last_name: Tonbul
  orcid: 0000-0002-0999-9995
- first_name: 'Julian '
  full_name: 'Kappler, Julian '
  last_name: Kappler
- first_name: 'Saravanakumar '
  full_name: 'Murugan, Saravanakumar '
  last_name: Murugan
- first_name: 'Roland '
  full_name: 'Schoch, Roland '
  last_name: Schoch
- first_name: 'Michal '
  full_name: 'Nowakowski, Michal '
  last_name: Nowakowski
- first_name: Pia
  full_name: Lange, Pia
  last_name: Lange
- first_name: 'Matthias '
  full_name: 'Bauer, Matthias '
  last_name: Bauer
- first_name: Michael R.
  full_name: Buchmeiser, Michael R.
  last_name: Buchmeiser
citation:
  ama: 'Tonbul G, Kappler J, Murugan S, et al. Characterization of Na-S Battery System
    Using X-ray Absorption Spectroscopy. In: ; 2023.'
  apa: Tonbul, G., Kappler, J., Murugan, S., Schoch, R., Nowakowski, M., Lange, P.,
    Bauer, M., &#38; Buchmeiser, M. R. (2023). <i>Characterization of Na-S Battery
    System Using X-ray Absorption Spectroscopy</i>. Advanced Battery Power – Kraftwerk
    Batterie 2023, Aachen.
  bibtex: '@inproceedings{Tonbul_Kappler_Murugan_Schoch_Nowakowski_Lange_Bauer_Buchmeiser_2023,
    place={Aachen}, title={Characterization of Na-S Battery System Using X-ray Absorption
    Spectroscopy}, author={Tonbul, Güldeniz and Kappler, Julian  and Murugan, Saravanakumar  and
    Schoch, Roland  and Nowakowski, Michal  and Lange, Pia and Bauer, Matthias  and
    Buchmeiser, Michael R.}, year={2023} }'
  chicago: Tonbul, Güldeniz, Julian  Kappler, Saravanakumar  Murugan, Roland  Schoch,
    Michal  Nowakowski, Pia Lange, Matthias  Bauer, and Michael R. Buchmeiser. “Characterization
    of Na-S Battery System Using X-Ray Absorption Spectroscopy.” Aachen, 2023.
  ieee: G. Tonbul <i>et al.</i>, “Characterization of Na-S Battery System Using X-ray
    Absorption Spectroscopy,” presented at the Advanced Battery Power – Kraftwerk
    Batterie 2023, Aachen, 2023.
  mla: Tonbul, Güldeniz, et al. <i>Characterization of Na-S Battery System Using X-Ray
    Absorption Spectroscopy</i>. 2023.
  short: 'G. Tonbul, J. Kappler, S. Murugan, R. Schoch, M. Nowakowski, P. Lange, M.
    Bauer, M.R. Buchmeiser, in: Aachen, 2023.'
conference:
  end_date: 2023-04-28
  location: Aachen
  name: Advanced Battery Power – Kraftwerk Batterie 2023
  start_date: 2023-04-27
date_created: 2023-05-03T08:31:08Z
date_updated: 2023-05-03T08:59:18Z
department:
- _id: '306'
language:
- iso: eng
place: Aachen
status: public
title: Characterization of Na-S Battery System Using X-ray Absorption Spectroscopy
type: conference_abstract
user_id: '89054'
year: '2023'
...
---
_id: '40982'
abstract:
- lang: eng
  text: Effective photoinduced charge transfer makes molecular bimetallic assemblies
    attractive for applications as active light induced proton reduction systems.
    For a more sustainable future, development of competitive base metal dyads is
    mandatory. However, the electron transfer mechanisms from the photosensitizer
    to the proton reduction catalyst in base metal dyads remain so far unexplored.
    We study a Fe-Co dyad that exhibits photocatalytic H2 production activity using
    femtosecond X-ray emission spectroscopy, complemented by ultrafast optical spectroscopy
    and theoretical time-dependent DFT calculations, to understand the electronic
    and structural dynamics after photoexcitation and during the subsequent charge
    transfer process from the FeII photosensitizer to the cobaloxime catalyst. Using
    this novel approach, the simultaneous measurement of the transient Kalpha X-ray
    emission at the iron and cobalt K-edges in a two-colour experiment is enabled
    making it possible to correlate the excited state dynamics to the electron transfer
    processes. The methodology, therefore, provides a clear and direct spectroscopic
    evidence of the Fe->Co electron transfer responsible for the proton reduction
    activity.
author:
- first_name: Michał
  full_name: Nowakowski, Michał
  id: '78878'
  last_name: Nowakowski
  orcid: 0000-0002-3734-7011
- first_name: Marina
  full_name: Huber-Gedert, Marina
  id: '38352'
  last_name: Huber-Gedert
- first_name: Hossam
  full_name: Elgabarty, Hossam
  id: '60250'
  last_name: Elgabarty
  orcid: 0000-0002-4945-1481
- first_name: Jacek
  full_name: Kubicki, Jacek
  last_name: Kubicki
- first_name: Ahmet
  full_name: Kertem, Ahmet
  last_name: Kertem
- first_name: Natalia
  full_name: Lindner, Natalia
  last_name: Lindner
- first_name: Dimitry
  full_name: Khakhulin, Dimitry
  last_name: Khakhulin
- first_name: Frederico Alves
  full_name: Lima, Frederico Alves
  last_name: Lima
- first_name: Tae-Kyu
  full_name: Choi, Tae-Kyu
  last_name: Choi
- first_name: Mykola
  full_name: Biednov, Mykola
  last_name: Biednov
- first_name: Natalia
  full_name: Piergies, Natalia
  last_name: Piergies
- first_name: Peter
  full_name: Zalden, Peter
  last_name: Zalden
- first_name: Katerina
  full_name: Kubicek, Katerina
  last_name: Kubicek
- first_name: Angel
  full_name: Rodriguez-Fernandez, Angel
  last_name: Rodriguez-Fernandez
- first_name: Mohammad Alaraby
  full_name: Salem, Mohammad Alaraby
  last_name: Salem
- first_name: Thomas
  full_name: Kühne, Thomas
  id: '49079'
  last_name: Kühne
- first_name: Wojciech
  full_name: Gawelda, Wojciech
  last_name: Gawelda
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Nowakowski M, Huber-Gedert M, Elgabarty H, et al. Ultrafast two-colour X-ray
    emission spectroscopy reveals excited state landscape in a base metal dyad. <i>arxiv</i>.
    Published online 2023.
  apa: Nowakowski, M., Huber-Gedert, M., Elgabarty, H., Kubicki, J., Kertem, A., Lindner,
    N., Khakhulin, D., Lima, F. A., Choi, T.-K., Biednov, M., Piergies, N., Zalden,
    P., Kubicek, K., Rodriguez-Fernandez, A., Salem, M. A., Kühne, T., Gawelda, W.,
    &#38; Bauer, M. (2023). Ultrafast two-colour X-ray emission spectroscopy reveals
    excited state landscape in a base metal dyad. In <i>arxiv</i>.
  bibtex: '@article{Nowakowski_Huber-Gedert_Elgabarty_Kubicki_Kertem_Lindner_Khakhulin_Lima_Choi_Biednov_et
    al._2023, title={Ultrafast two-colour X-ray emission spectroscopy reveals excited
    state landscape in a base metal dyad}, journal={arxiv}, author={Nowakowski, Michał
    and Huber-Gedert, Marina and Elgabarty, Hossam and Kubicki, Jacek and Kertem,
    Ahmet and Lindner, Natalia and Khakhulin, Dimitry and Lima, Frederico Alves and
    Choi, Tae-Kyu and Biednov, Mykola and et al.}, year={2023} }'
  chicago: Nowakowski, Michał, Marina Huber-Gedert, Hossam Elgabarty, Jacek Kubicki,
    Ahmet Kertem, Natalia Lindner, Dimitry Khakhulin, et al. “Ultrafast Two-Colour
    X-Ray Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad.”
    <i>Arxiv</i>, 2023.
  ieee: M. Nowakowski <i>et al.</i>, “Ultrafast two-colour X-ray emission spectroscopy
    reveals excited state landscape in a base metal dyad,” <i>arxiv</i>. 2023.
  mla: Nowakowski, Michał, et al. “Ultrafast Two-Colour X-Ray Emission Spectroscopy
    Reveals Excited State Landscape in a Base Metal Dyad.” <i>Arxiv</i>, 2023.
  short: M. Nowakowski, M. Huber-Gedert, H. Elgabarty, J. Kubicki, A. Kertem, N. Lindner,
    D. Khakhulin, F.A. Lima, T.-K. Choi, M. Biednov, N. Piergies, P. Zalden, K. Kubicek,
    A. Rodriguez-Fernandez, M.A. Salem, T. Kühne, W. Gawelda, M. Bauer, Arxiv (2023).
date_created: 2023-01-30T16:08:46Z
date_updated: 2023-08-09T08:58:46Z
department:
- _id: '35'
- _id: '306'
language:
- iso: eng
publication: arxiv
status: public
title: Ultrafast two-colour X-ray emission spectroscopy reveals excited state landscape
  in a base metal dyad
type: preprint
user_id: '48467'
year: '2023'
...
---
_id: '52343'
abstract:
- lang: eng
  text: Improved enantioselectivity in the 1,2-addition was observed for chiral Rh
    norbornadiene catalysts immobilized on ordered mesoporous silica with small pores.
    Confinement effects were rationalized by experimental and computational studies.
article_type: original
author:
- first_name: Manuel
  full_name: Kirchhof, Manuel
  last_name: Kirchhof
- first_name: Katrin
  full_name: Gugeler, Katrin
  last_name: Gugeler
- first_name: Ann-Katrin
  full_name: Beurer, Ann-Katrin
  last_name: Beurer
- first_name: Felix Richard
  full_name: Fischer, Felix Richard
  last_name: Fischer
- first_name: Derman
  full_name: Batman, Derman
  last_name: Batman
- first_name: Soeren M.
  full_name: Bauch, Soeren M.
  last_name: Bauch
- first_name: Sofia
  full_name: Kolin, Sofia
  last_name: Kolin
- first_name: Elliot
  full_name: Nicholas, Elliot
  last_name: Nicholas
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Charlotte
  full_name: Vogler, Charlotte
  last_name: Vogler
- first_name: Shravan R.
  full_name: Kousik, Shravan R.
  last_name: Kousik
- first_name: Anna
  full_name: Zens, Anna
  last_name: Zens
- first_name: Bernd
  full_name: Plietker, Bernd
  last_name: Plietker
- first_name: Petia
  full_name: Atanasova, Petia
  last_name: Atanasova
- first_name: Stefan
  full_name: Naumann, Stefan
  last_name: Naumann
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
- first_name: Johanna R.
  full_name: Bruckner, Johanna R.
  last_name: Bruckner
- first_name: Yvonne
  full_name: Traa, Yvonne
  last_name: Traa
- first_name: Johannes
  full_name: Kästner, Johannes
  last_name: Kästner
- first_name: Sabine
  full_name: Laschat, Sabine
  last_name: Laschat
citation:
  ama: 'Kirchhof M, Gugeler K, Beurer A-K, et al. Tethering chiral Rh diene complexes
    inside mesoporous solids: experimental and theoretical study of substituent, pore
    and linker effects on asymmetric catalysis. <i>Catalysis Science Technology</i>.
    2023;13(12):3709-3724. doi:<a href="https://doi.org/10.1039/d3cy00381g">10.1039/d3cy00381g</a>'
  apa: 'Kirchhof, M., Gugeler, K., Beurer, A.-K., Fischer, F. R., Batman, D., Bauch,
    S. M., Kolin, S., Nicholas, E., Schoch, R., Vogler, C., Kousik, S. R., Zens, A.,
    Plietker, B., Atanasova, P., Naumann, S., Bauer, M., Bruckner, J. R., Traa, Y.,
    Kästner, J., &#38; Laschat, S. (2023). Tethering chiral Rh diene complexes inside
    mesoporous solids: experimental and theoretical study of substituent, pore and
    linker effects on asymmetric catalysis. <i>Catalysis Science Technology</i>, <i>13</i>(12),
    3709–3724. <a href="https://doi.org/10.1039/d3cy00381g">https://doi.org/10.1039/d3cy00381g</a>'
  bibtex: '@article{Kirchhof_Gugeler_Beurer_Fischer_Batman_Bauch_Kolin_Nicholas_Schoch_Vogler_et
    al._2023, title={Tethering chiral Rh diene complexes inside mesoporous solids:
    experimental and theoretical study of substituent, pore and linker effects on
    asymmetric catalysis}, volume={13}, DOI={<a href="https://doi.org/10.1039/d3cy00381g">10.1039/d3cy00381g</a>},
    number={12}, journal={Catalysis Science Technology}, publisher={Royal Society
    of Chemistry (RSC)}, author={Kirchhof, Manuel and Gugeler, Katrin and Beurer,
    Ann-Katrin and Fischer, Felix Richard and Batman, Derman and Bauch, Soeren M.
    and Kolin, Sofia and Nicholas, Elliot and Schoch, Roland and Vogler, Charlotte
    and et al.}, year={2023}, pages={3709–3724} }'
  chicago: 'Kirchhof, Manuel, Katrin Gugeler, Ann-Katrin Beurer, Felix Richard Fischer,
    Derman Batman, Soeren M. Bauch, Sofia Kolin, et al. “Tethering Chiral Rh Diene
    Complexes inside Mesoporous Solids: Experimental and Theoretical Study of Substituent,
    Pore and Linker Effects on Asymmetric Catalysis.” <i>Catalysis Science Technology</i>
    13, no. 12 (2023): 3709–24. <a href="https://doi.org/10.1039/d3cy00381g">https://doi.org/10.1039/d3cy00381g</a>.'
  ieee: 'M. Kirchhof <i>et al.</i>, “Tethering chiral Rh diene complexes inside mesoporous
    solids: experimental and theoretical study of substituent, pore and linker effects
    on asymmetric catalysis,” <i>Catalysis Science Technology</i>, vol. 13, no. 12,
    pp. 3709–3724, 2023, doi: <a href="https://doi.org/10.1039/d3cy00381g">10.1039/d3cy00381g</a>.'
  mla: 'Kirchhof, Manuel, et al. “Tethering Chiral Rh Diene Complexes inside Mesoporous
    Solids: Experimental and Theoretical Study of Substituent, Pore and Linker Effects
    on Asymmetric Catalysis.” <i>Catalysis Science Technology</i>, vol. 13, no. 12,
    Royal Society of Chemistry (RSC), 2023, pp. 3709–24, doi:<a href="https://doi.org/10.1039/d3cy00381g">10.1039/d3cy00381g</a>.'
  short: M. Kirchhof, K. Gugeler, A.-K. Beurer, F.R. Fischer, D. Batman, S.M. Bauch,
    S. Kolin, E. Nicholas, R. Schoch, C. Vogler, S.R. Kousik, A. Zens, B. Plietker,
    P. Atanasova, S. Naumann, M. Bauer, J.R. Bruckner, Y. Traa, J. Kästner, S. Laschat,
    Catalysis Science Technology 13 (2023) 3709–3724.
date_created: 2024-03-07T09:12:06Z
date_updated: 2025-06-16T09:00:17Z
department:
- _id: '306'
doi: 10.1039/d3cy00381g
intvolume: '        13'
issue: '12'
keyword:
- Catalysis
language:
- iso: eng
page: 3709-3724
publication: Catalysis Science Technology
publication_identifier:
  issn:
  - 2044-4753
  - 2044-4761
publication_status: published
publisher: Royal Society of Chemistry (RSC)
status: public
title: 'Tethering chiral Rh diene complexes inside mesoporous solids: experimental
  and theoretical study of substituent, pore and linker effects on asymmetric catalysis'
type: journal_article
user_id: '48467'
volume: 13
year: '2023'
...
---
_id: '49608'
abstract:
- lang: eng
  text: <jats:p>The effects of backbone amine functionalization in three new homoleptic
    C^N^C type ruthenium(II) complexes bearing a tridentate bis‐imidazole‐2‐ylidene
    pyridine ligand framework are characterized and studied by single crystal diffraction,
    electrochemistry, optical spectroscopy and transient absorption spectroscopy in
    combination with ab initio DFT calculations. Functionalization by dimethylamine
    groups in 4‐position of the pyridine backbone significantly influences the properties
    of the complexes as revealed by comparison with the unfunctionalized references.
    As a result of the amine functionalization, a higher molar absorption coefficient
    of the MLCT bands, a decreased photoluminescence quantum yield at room temperature
    together with a shortened excited state lifetime but an improved photostability
    is observed. Introduction of electron donating and withdrawing groups at the NHC
    unit modifies the electronic and optical properties, such as the oxidation potential,
    absorption and emission properties, and the lifetimes of the excited states.</jats:p>
author:
- first_name: Lorena
  full_name: Fritsch, Lorena
  id: '44418'
  last_name: Fritsch
- first_name: Yannik
  full_name: Vukadinovic, Yannik
  last_name: Vukadinovic
- first_name: Moritz
  full_name: Lang, Moritz
  last_name: Lang
- first_name: Robert
  full_name: Naumann, Robert
  last_name: Naumann
- first_name: Maria-Sophie
  full_name: Bertrams, Maria-Sophie
  last_name: Bertrams
- first_name: Ayla
  full_name: Kruse, Ayla
  last_name: Kruse
- first_name: Roland
  full_name: Schoch, Roland
  id: '48467'
  last_name: Schoch
  orcid: 0000-0003-2061-7289
- first_name: Patrick
  full_name: Müller, Patrick
  id: '54037'
  last_name: Müller
  orcid: 0000-0003-1103-4073
- first_name: Adam
  full_name: Neuba, Adam
  last_name: Neuba
- first_name: Philipp
  full_name: Dierks, Philipp
  last_name: Dierks
- first_name: Stefan
  full_name: Lochbrunner, Stefan
  last_name: Lochbrunner
- first_name: Christoph
  full_name: Kerzig, Christoph
  last_name: Kerzig
- first_name: Katja
  full_name: Heinze, Katja
  last_name: Heinze
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Fritsch L, Vukadinovic Y, Lang M, et al. Chemical and photophysical properties
    of amine functionalized bis‐NHC‐pyridine‐Ru(II) complexes. <i>ChemPhotoChem</i>.
    Published online 2023. doi:<a href="https://doi.org/10.1002/cptc.202300281">10.1002/cptc.202300281</a>
  apa: Fritsch, L., Vukadinovic, Y., Lang, M., Naumann, R., Bertrams, M.-S., Kruse,
    A., Schoch, R., Müller, P., Neuba, A., Dierks, P., Lochbrunner, S., Kerzig, C.,
    Heinze, K., &#38; Bauer, M. (2023). Chemical and photophysical properties of amine
    functionalized bis‐NHC‐pyridine‐Ru(II) complexes. <i>ChemPhotoChem</i>. <a href="https://doi.org/10.1002/cptc.202300281">https://doi.org/10.1002/cptc.202300281</a>
  bibtex: '@article{Fritsch_Vukadinovic_Lang_Naumann_Bertrams_Kruse_Schoch_Müller_Neuba_Dierks_et
    al._2023, title={Chemical and photophysical properties of amine functionalized
    bis‐NHC‐pyridine‐Ru(II) complexes}, DOI={<a href="https://doi.org/10.1002/cptc.202300281">10.1002/cptc.202300281</a>},
    journal={ChemPhotoChem}, publisher={Wiley}, author={Fritsch, Lorena and Vukadinovic,
    Yannik and Lang, Moritz and Naumann, Robert and Bertrams, Maria-Sophie and Kruse,
    Ayla and Schoch, Roland and Müller, Patrick and Neuba, Adam and Dierks, Philipp
    and et al.}, year={2023} }'
  chicago: Fritsch, Lorena, Yannik Vukadinovic, Moritz Lang, Robert Naumann, Maria-Sophie
    Bertrams, Ayla Kruse, Roland Schoch, et al. “Chemical and Photophysical Properties
    of Amine Functionalized Bis‐NHC‐pyridine‐Ru(II) Complexes.” <i>ChemPhotoChem</i>,
    2023. <a href="https://doi.org/10.1002/cptc.202300281">https://doi.org/10.1002/cptc.202300281</a>.
  ieee: 'L. Fritsch <i>et al.</i>, “Chemical and photophysical properties of amine
    functionalized bis‐NHC‐pyridine‐Ru(II) complexes,” <i>ChemPhotoChem</i>, 2023,
    doi: <a href="https://doi.org/10.1002/cptc.202300281">10.1002/cptc.202300281</a>.'
  mla: Fritsch, Lorena, et al. “Chemical and Photophysical Properties of Amine Functionalized
    Bis‐NHC‐pyridine‐Ru(II) Complexes.” <i>ChemPhotoChem</i>, Wiley, 2023, doi:<a
    href="https://doi.org/10.1002/cptc.202300281">10.1002/cptc.202300281</a>.
  short: L. Fritsch, Y. Vukadinovic, M. Lang, R. Naumann, M.-S. Bertrams, A. Kruse,
    R. Schoch, P. Müller, A. Neuba, P. Dierks, S. Lochbrunner, C. Kerzig, K. Heinze,
    M. Bauer, ChemPhotoChem (2023).
date_created: 2023-12-13T15:09:09Z
date_updated: 2025-08-15T13:00:34Z
department:
- _id: '306'
doi: 10.1002/cptc.202300281
keyword:
- Photo
language:
- iso: eng
publication: ChemPhotoChem
publication_identifier:
  issn:
  - 2367-0932
  - 2367-0932
publication_status: published
publisher: Wiley
status: public
title: Chemical and photophysical properties of amine functionalized bis‐NHC‐pyridine‐Ru(II)
  complexes
type: journal_article
user_id: '48467'
year: '2023'
...
---
_id: '40986'
abstract:
- lang: eng
  text: Currently, chemistry and physics are strongly dependent on the concept of
    the oxidation state. While the formal oxidation state is easily evaluated, the
    real physical oxidation state value is often difficult to determine and significantly
    varies from the formal values. Determination of the ionization threshold in X-ray
    absorption spectroscopy (XANES) relies on the absorption edge position and sometimes
    poses limitations, mainly due to the edge resonances. Moreover, the lower energy
    states can be probed only within x-soft or XUV photons providing only surface
    state information of probed materials. Here, we employ high energy resolution
    off-resonant spectroscopy to determine both 1s and 3p binding energies of Fe-based
    materials and therefore correlate to their physical oxidation state. The results
    are compared to the ones obtained with classical X-ray absorption, X-ray emission,
    and photoelectron spectroscopies. The observed differences in binding energies
    are discussed in a frame of initial and final state interactions with the atom's
    electronic configurations. The presented methodology is discussed towards potential
    use to single-shot experiments and application at X-ray free-electron lasers.
    Alternatively, core level X-ray emission spectroscopy can be used, but the emission
    line positions are strongly affected by spin-orbit interaction. However, due to
    the energy transfer from the photon to the excited core electron, the same information
    as in XANES is probed in high energy resolution off-resonant spectroscopy (HEROS).
    Based on the Kramers–Heisenberg theory, we propose a new approach for ionization
    threshold determination which is free of the limitations encountered in XANES-based
    determination of the core state energy. Namely, the value of core state energy
    can be determined analytically using a few HEROS spectra recorded with significantly
    higher spectral resolution. This approach provides a basis for the universal physical
    oxidation state determination method.
author:
- first_name: Michał
  full_name: Nowakowski, Michał
  id: '78878'
  last_name: Nowakowski
  orcid: 0000-0002-3734-7011
- first_name: Aleksandr
  full_name: Kalinko, Aleksandr
  last_name: Kalinko
- first_name: Jakub
  full_name: Szlachetko, Jakub
  last_name: Szlachetko
- first_name: Rafał
  full_name: Fanselow, Rafał
  last_name: Fanselow
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
citation:
  ama: Nowakowski M, Kalinko A, Szlachetko J, Fanselow R, Bauer M. High resolution
    off resonant spectroscopy as a probe of the oxidation state. <i>Journal of Analytical
    Atomic Spectrometry</i>. 2022;37(11):2383-2391. doi:<a href="https://doi.org/10.1039/d2ja00232a">10.1039/d2ja00232a</a>
  apa: Nowakowski, M., Kalinko, A., Szlachetko, J., Fanselow, R., &#38; Bauer, M.
    (2022). High resolution off resonant spectroscopy as a probe of the oxidation
    state. <i>Journal of Analytical Atomic Spectrometry</i>, <i>37</i>(11), 2383–2391.
    <a href="https://doi.org/10.1039/d2ja00232a">https://doi.org/10.1039/d2ja00232a</a>
  bibtex: '@article{Nowakowski_Kalinko_Szlachetko_Fanselow_Bauer_2022, title={High
    resolution off resonant spectroscopy as a probe of the oxidation state}, volume={37},
    DOI={<a href="https://doi.org/10.1039/d2ja00232a">10.1039/d2ja00232a</a>}, number={11},
    journal={Journal of Analytical Atomic Spectrometry}, publisher={Royal Society
    of Chemistry (RSC)}, author={Nowakowski, Michał and Kalinko, Aleksandr and Szlachetko,
    Jakub and Fanselow, Rafał and Bauer, Matthias}, year={2022}, pages={2383–2391}
    }'
  chicago: 'Nowakowski, Michał, Aleksandr Kalinko, Jakub Szlachetko, Rafał Fanselow,
    and Matthias Bauer. “High Resolution off Resonant Spectroscopy as a Probe of the
    Oxidation State.” <i>Journal of Analytical Atomic Spectrometry</i> 37, no. 11
    (2022): 2383–91. <a href="https://doi.org/10.1039/d2ja00232a">https://doi.org/10.1039/d2ja00232a</a>.'
  ieee: 'M. Nowakowski, A. Kalinko, J. Szlachetko, R. Fanselow, and M. Bauer, “High
    resolution off resonant spectroscopy as a probe of the oxidation state,” <i>Journal
    of Analytical Atomic Spectrometry</i>, vol. 37, no. 11, pp. 2383–2391, 2022, doi:
    <a href="https://doi.org/10.1039/d2ja00232a">10.1039/d2ja00232a</a>.'
  mla: Nowakowski, Michał, et al. “High Resolution off Resonant Spectroscopy as a
    Probe of the Oxidation State.” <i>Journal of Analytical Atomic Spectrometry</i>,
    vol. 37, no. 11, Royal Society of Chemistry (RSC), 2022, pp. 2383–91, doi:<a href="https://doi.org/10.1039/d2ja00232a">10.1039/d2ja00232a</a>.
  short: M. Nowakowski, A. Kalinko, J. Szlachetko, R. Fanselow, M. Bauer, Journal
    of Analytical Atomic Spectrometry 37 (2022) 2383–2391.
date_created: 2023-01-30T16:24:06Z
date_updated: 2024-05-07T11:43:54Z
department:
- _id: '35'
- _id: '306'
doi: 10.1039/d2ja00232a
intvolume: '        37'
issue: '11'
keyword:
- Spectroscopy
- Analytical Chemistry
language:
- iso: eng
page: 2383-2391
publication: Journal of Analytical Atomic Spectrometry
publication_identifier:
  issn:
  - 0267-9477
  - 1364-5544
publication_status: published
publisher: Royal Society of Chemistry (RSC)
status: public
title: High resolution off resonant spectroscopy as a probe of the oxidation state
type: journal_article
user_id: '48467'
volume: 37
year: '2022'
...
---
_id: '40988'
abstract:
- lang: eng
  text: Increasing the metal-to-ligand charge transfer (MLCT) excited state lifetime
    of polypyridine iron(II) complexes can be achieved by lowering the ligand's π*
    orbital energy and by increasing the ligand field splitting. In the homo- and
    heteroleptic complexes [Fe(cpmp)2]2+ (12+) and [Fe(cpmp)(ddpd)]2+ (22+) with the
    tridentate ligands 6,2’’-carboxypyridyl-2,2’-methylamine-pyridyl-pyridine (cpmp)
    and N,N’-dimethyl-N,N’-di-pyridin-2-ylpyridine-2,6-diamine (ddpd) two or one dipyridyl
    ketone moieties provide low energy π* acceptor orbitals. A good metal-ligand orbital
    overlap to increase the ligand field splitting is achieved by optimizing the octahedricity
    through CO and NMe units between the coordinating pyridines which enable the formation
    of six-membered chelate rings. The push-pull ligand cpmp provides intra-ligand
    and ligand-to-ligand charge transfer (ILCT, LL'CT) excited states in addition
    to MLCT excited states. Ground and excited state properties of 12+ and 22+ were
    accessed by X-ray diffraction analyses, resonance Raman spectroscopy, (spectro)electrochemistry,
    EPR spectroscopy, X-ray emission spectroscopy, static and time-resolved IR and
    UV/Vis/NIR absorption spectroscopy as well as quantum chemical calculations.
author:
- first_name: Sebastian
  full_name: Weber, Sebastian
  last_name: Weber
- first_name: Ronny T.
  full_name: Zimmermann, Ronny T.
  last_name: Zimmermann
- first_name: Jens
  full_name: Bremer, Jens
  last_name: Bremer
- first_name: Ken L.
  full_name: Abel, Ken L.
  last_name: Abel
- first_name: David
  full_name: Poppitz, David
  last_name: Poppitz
- first_name: Nils
  full_name: Prinz, Nils
  last_name: Prinz
- first_name: Jan
  full_name: Ilsemann, Jan
  last_name: Ilsemann
- first_name: Sven
  full_name: Wendholt, Sven
  last_name: Wendholt
- first_name: Qingxin
  full_name: Yang, Qingxin
  last_name: Yang
- first_name: Reihaneh
  full_name: Pashminehazar, Reihaneh
  last_name: Pashminehazar
- first_name: Federico
  full_name: Monaco, Federico
  last_name: Monaco
- first_name: Peter
  full_name: Cloetens, Peter
  last_name: Cloetens
- first_name: Xiaohui
  full_name: Huang, Xiaohui
  last_name: Huang
- first_name: Christian
  full_name: Kübel, Christian
  last_name: Kübel
- first_name: Evgenii
  full_name: Kondratenko, Evgenii
  last_name: Kondratenko
- first_name: Matthias
  full_name: Bauer, Matthias
  id: '47241'
  last_name: Bauer
  orcid: 0000-0002-9294-6076
- first_name: Marcus
  full_name: Bäumer, Marcus
  last_name: Bäumer
- first_name: Mirijam
  full_name: Zobel, Mirijam
  last_name: Zobel
- first_name: Roger
  full_name: Gläser, Roger
  last_name: Gläser
- first_name: Kai
  full_name: Sundmacher, Kai
  last_name: Sundmacher
- first_name: Thomas L.
  full_name: Sheppard, Thomas L.
  last_name: Sheppard
citation:
  ama: 'Weber S, Zimmermann RT, Bremer J, et al. Digitization in Catalysis Research:
    Towards a Holistic Description of a Ni/Al2O3 Reference Catalyst for CO2 Methanation.
    <i>ChemCatChem</i>. 2022;14(8). doi:<a href="https://doi.org/10.1002/cctc.202101878">10.1002/cctc.202101878</a>'
  apa: 'Weber, S., Zimmermann, R. T., Bremer, J., Abel, K. L., Poppitz, D., Prinz,
    N., Ilsemann, J., Wendholt, S., Yang, Q., Pashminehazar, R., Monaco, F., Cloetens,
    P., Huang, X., Kübel, C., Kondratenko, E., Bauer, M., Bäumer, M., Zobel, M., Gläser,
    R., … Sheppard, T. L. (2022). Digitization in Catalysis Research: Towards a Holistic
    Description of a Ni/Al2O3 Reference Catalyst for CO2 Methanation. <i>ChemCatChem</i>,
    <i>14</i>(8). <a href="https://doi.org/10.1002/cctc.202101878">https://doi.org/10.1002/cctc.202101878</a>'
  bibtex: '@article{Weber_Zimmermann_Bremer_Abel_Poppitz_Prinz_Ilsemann_Wendholt_Yang_Pashminehazar_et
    al._2022, title={Digitization in Catalysis Research: Towards a Holistic Description
    of a Ni/Al2O3 Reference Catalyst for CO2 Methanation}, volume={14}, DOI={<a href="https://doi.org/10.1002/cctc.202101878">10.1002/cctc.202101878</a>},
    number={8}, journal={ChemCatChem}, publisher={Wiley}, author={Weber, Sebastian
    and Zimmermann, Ronny T. and Bremer, Jens and Abel, Ken L. and Poppitz, David
    and Prinz, Nils and Ilsemann, Jan and Wendholt, Sven and Yang, Qingxin and Pashminehazar,
    Reihaneh and et al.}, year={2022} }'
  chicago: 'Weber, Sebastian, Ronny T. Zimmermann, Jens Bremer, Ken L. Abel, David
    Poppitz, Nils Prinz, Jan Ilsemann, et al. “Digitization in Catalysis Research:
    Towards a Holistic Description of a Ni/Al2O3 Reference Catalyst for CO2 Methanation.”
    <i>ChemCatChem</i> 14, no. 8 (2022). <a href="https://doi.org/10.1002/cctc.202101878">https://doi.org/10.1002/cctc.202101878</a>.'
  ieee: 'S. Weber <i>et al.</i>, “Digitization in Catalysis Research: Towards a Holistic
    Description of a Ni/Al2O3 Reference Catalyst for CO2 Methanation,” <i>ChemCatChem</i>,
    vol. 14, no. 8, 2022, doi: <a href="https://doi.org/10.1002/cctc.202101878">10.1002/cctc.202101878</a>.'
  mla: 'Weber, Sebastian, et al. “Digitization in Catalysis Research: Towards a Holistic
    Description of a Ni/Al2O3 Reference Catalyst for CO2 Methanation.” <i>ChemCatChem</i>,
    vol. 14, no. 8, Wiley, 2022, doi:<a href="https://doi.org/10.1002/cctc.202101878">10.1002/cctc.202101878</a>.'
  short: S. Weber, R.T. Zimmermann, J. Bremer, K.L. Abel, D. Poppitz, N. Prinz, J.
    Ilsemann, S. Wendholt, Q. Yang, R. Pashminehazar, F. Monaco, P. Cloetens, X. Huang,
    C. Kübel, E. Kondratenko, M. Bauer, M. Bäumer, M. Zobel, R. Gläser, K. Sundmacher,
    T.L. Sheppard, ChemCatChem 14 (2022).
date_created: 2023-01-30T16:25:02Z
date_updated: 2024-05-08T13:03:51Z
department:
- _id: '35'
- _id: '306'
doi: 10.1002/cctc.202101878
intvolume: '        14'
issue: '8'
keyword:
- Inorganic Chemistry
- Organic Chemistry
- Physical and Theoretical Chemistry
- Catalysis
language:
- iso: eng
publication: ChemCatChem
publication_identifier:
  issn:
  - 1867-3880
  - 1867-3899
publication_status: published
publisher: Wiley
status: public
title: 'Digitization in Catalysis Research: Towards a Holistic Description of a Ni/Al2O3
  Reference Catalyst for CO2 Methanation'
type: journal_article
user_id: '48467'
volume: 14
year: '2022'
...
