---
_id: '63947'
abstract:
- lang: eng
text: The interactions of molecules such as surfactants with solid interfaces are
not sufficiently understood since their study is challenging with standard spectroscopic
methods. In this work, octanol-d17 as a model system confined in the mesopores
of SBA-15 is studied by variable temperature deuterium solid-state NMR, and the
findings are compared to those of bulk octanol-d17. The magic angle spinning (MAS)
as well as the static, nonspinning case, are investigated, showing that the described
observations are independent of the applied NMR method. The 2H NMR spectra of
both the bulk and the confined octanol-d17 show a large and a small quadrupolar
Pake pattern below the melting point, suggesting a rigid conformation of the observed
molecules with a 3-fold jump motion of the terminal CD3-group. Apart from the
melting of the solid, no other phase transition is observed for either sample.
The confined octanol-d17 forms a pore solid, exhibiting a melting point 38 K lower
than bulk octanol-d17. The interactions of the molecule with the mesoporous SBA-15
bring about a distribution of activation energies for the melting process, resulting
in a gradual melting process.
author:
- first_name: Sonja C.
full_name: Döller, Sonja C.
last_name: Döller
- first_name: Martin
full_name: Brodrecht, Martin
last_name: Brodrecht
- first_name: Nadia B.
full_name: Haro Mares, Nadia B.
last_name: Haro Mares
- first_name: Hergen
full_name: Breitzke, Hergen
last_name: Breitzke
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Markus
full_name: Hoffmann, Markus
last_name: Hoffmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Döller SC, Brodrecht M, Haro Mares NB, et al. Deuterium NMR Studies of the
Solid–Liquid Phase Transition of Octanol-d17 Confined in SBA-15. Journal of
Physical Chemistry C. 2021;125(45):25155–25164. doi:10.1021/acs.jpcc.1c05873
apa: Döller, S. C., Brodrecht, M., Haro Mares, N. B., Breitzke, H., Gutmann, T.,
Hoffmann, M., & Buntkowsky, G. (2021). Deuterium NMR Studies of the Solid–Liquid
Phase Transition of Octanol-d17 Confined in SBA-15. Journal of Physical Chemistry
C, 125(45), 25155–25164. https://doi.org/10.1021/acs.jpcc.1c05873
bibtex: '@article{Döller_Brodrecht_Haro Mares_Breitzke_Gutmann_Hoffmann_Buntkowsky_2021,
title={Deuterium NMR Studies of the Solid–Liquid Phase Transition of Octanol-d17
Confined in SBA-15}, volume={125}, DOI={10.1021/acs.jpcc.1c05873},
number={45}, journal={Journal of Physical Chemistry C}, publisher={American Chemical
Society}, author={Döller, Sonja C. and Brodrecht, Martin and Haro Mares, Nadia
B. and Breitzke, Hergen and Gutmann, Torsten and Hoffmann, Markus and Buntkowsky,
Gerd}, year={2021}, pages={25155–25164} }'
chicago: 'Döller, Sonja C., Martin Brodrecht, Nadia B. Haro Mares, Hergen Breitzke,
Torsten Gutmann, Markus Hoffmann, and Gerd Buntkowsky. “Deuterium NMR Studies
of the Solid–Liquid Phase Transition of Octanol-D17 Confined in SBA-15.” Journal
of Physical Chemistry C 125, no. 45 (2021): 25155–25164. https://doi.org/10.1021/acs.jpcc.1c05873.'
ieee: 'S. C. Döller et al., “Deuterium NMR Studies of the Solid–Liquid Phase
Transition of Octanol-d17 Confined in SBA-15,” Journal of Physical Chemistry
C, vol. 125, no. 45, pp. 25155–25164, 2021, doi: 10.1021/acs.jpcc.1c05873.'
mla: Döller, Sonja C., et al. “Deuterium NMR Studies of the Solid–Liquid Phase Transition
of Octanol-D17 Confined in SBA-15.” Journal of Physical Chemistry C, vol.
125, no. 45, American Chemical Society, 2021, pp. 25155–25164, doi:10.1021/acs.jpcc.1c05873.
short: S.C. Döller, M. Brodrecht, N.B. Haro Mares, H. Breitzke, T. Gutmann, M. Hoffmann,
G. Buntkowsky, Journal of Physical Chemistry C 125 (2021) 25155–25164.
date_created: 2026-02-07T09:12:35Z
date_updated: 2026-02-17T16:18:28Z
doi: 10.1021/acs.jpcc.1c05873
extern: '1'
intvolume: ' 125'
issue: '45'
language:
- iso: eng
page: 25155–25164
publication: Journal of Physical Chemistry C
publication_identifier:
issn:
- 1932-7447
publisher: American Chemical Society
status: public
title: Deuterium NMR Studies of the Solid–Liquid Phase Transition of Octanol-d17 Confined
in SBA-15
type: journal_article
user_id: '100715'
volume: 125
year: '2021'
...
---
_id: '64037'
abstract:
- lang: eng
text: Cross-linked thermosets are investigated by C-13 solid-state nuclear magnetic
resonance (NMR) spectroscopy to determine their structure and to distinguish important
epoxy resins and hardening agents. In addition to the epoxy resin and hardening
agent, the identification of phosphorus-containing flame retardants is demonstrated
by P-31 solid-state NMR. These studies provide a spectral database for routine
use, which is finally applied to analyze commercial products containing an unknown
multicomponent system.
author:
- first_name: T.
full_name: Schäfer, T.
last_name: Schäfer
- first_name: G.
full_name: Buntkowsky, G.
last_name: Buntkowsky
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
citation:
ama: Schäfer T, Buntkowsky G, Gutmann T. Solid-State Nuclear Magnetic Resonance
as a Versatile Tool To Identify the Main Chemical Components of Epoxy-Based Thermosets.
ACS Omega. 2020;5(10):5412–5420. doi:10.1021/acsomega.9b04482
apa: Schäfer, T., Buntkowsky, G., & Gutmann, T. (2020). Solid-State Nuclear
Magnetic Resonance as a Versatile Tool To Identify the Main Chemical Components
of Epoxy-Based Thermosets. ACS Omega, 5(10), 5412–5420. https://doi.org/10.1021/acsomega.9b04482
bibtex: '@article{Schäfer_Buntkowsky_Gutmann_2020, title={Solid-State Nuclear Magnetic
Resonance as a Versatile Tool To Identify the Main Chemical Components of Epoxy-Based
Thermosets}, volume={5}, DOI={10.1021/acsomega.9b04482},
number={10}, journal={ACS Omega}, author={Schäfer, T. and Buntkowsky, G. and Gutmann,
Torsten}, year={2020}, pages={5412–5420} }'
chicago: 'Schäfer, T., G. Buntkowsky, and Torsten Gutmann. “Solid-State Nuclear
Magnetic Resonance as a Versatile Tool To Identify the Main Chemical Components
of Epoxy-Based Thermosets.” ACS Omega 5, no. 10 (2020): 5412–5420. https://doi.org/10.1021/acsomega.9b04482.'
ieee: 'T. Schäfer, G. Buntkowsky, and T. Gutmann, “Solid-State Nuclear Magnetic
Resonance as a Versatile Tool To Identify the Main Chemical Components of Epoxy-Based
Thermosets,” ACS Omega, vol. 5, no. 10, pp. 5412–5420, 2020, doi: 10.1021/acsomega.9b04482.'
mla: Schäfer, T., et al. “Solid-State Nuclear Magnetic Resonance as a Versatile
Tool To Identify the Main Chemical Components of Epoxy-Based Thermosets.” ACS
Omega, vol. 5, no. 10, 2020, pp. 5412–5420, doi:10.1021/acsomega.9b04482.
short: T. Schäfer, G. Buntkowsky, T. Gutmann, ACS Omega 5 (2020) 5412–5420.
date_created: 2026-02-07T16:08:30Z
date_updated: 2026-02-17T16:13:36Z
doi: 10.1021/acsomega.9b04482
extern: '1'
intvolume: ' 5'
issue: '10'
language:
- iso: eng
page: 5412–5420
publication: ACS Omega
status: public
title: Solid-State Nuclear Magnetic Resonance as a Versatile Tool To Identify the
Main Chemical Components of Epoxy-Based Thermosets
type: journal_article
user_id: '100715'
volume: 5
year: '2020'
...
---
_id: '64004'
abstract:
- lang: eng
text: Abstract A facile approach is reported for the preparation of dirhodium coordination
polymers [Rh2(L1)2]n (Rh2-L1) and [Rh2(L2)2]n (Rh2-L2; L1=N,N’-(pyromellitoyl)-bis-L-phenylalanine
diacid anion, L2=bis-N,N’-(L-phenylalanyl) naphthalene-1,4,5,8-tetracarboxylate
diimide) from chiral dicarboxylic acids by ligand exchange. Multiple techniques
including FTIR, XPS, and 1H→13C CP MAS NMR spectroscopy reveal the formation of
the coordination polymers. 19F MAS NMR was utilized to investigate the remaining
TFA groups in the obtained coordination polymers, and demonstrated near-quantitative
ligand exchange. DR-UV-vis and XPS confirm the oxidation state of the Rh center
and that the Rh-single bond in the dirhodium node is maintained in the synthesis
of Rh2-L1 and Rh2-L2. Both coordination polymers exhibit excellent catalytic performance
in the asymmetric cyclopropanation reaction between styrene and diazooxindole.
The catalysts can be easily recycled and reused without significant reduction
in their catalytic efficiency.
author:
- first_name: Zhenzhong
full_name: Li, Zhenzhong
last_name: Li
- first_name: Lorenz
full_name: Rösler, Lorenz
last_name: Rösler
- first_name: Kevin
full_name: Herr, Kevin
last_name: Herr
- first_name: Martin
full_name: Brodrecht, Martin
last_name: Brodrecht
- first_name: Hergen
full_name: Breitzke, Hergen
last_name: Breitzke
- first_name: Kathrin
full_name: Hofmann, Kathrin
last_name: Hofmann
- first_name: Hans-Heinrich
full_name: Limbach, Hans-Heinrich
last_name: Limbach
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: 'Li Z, Rösler L, Herr K, et al. Dirhodium Coordination Polymers for Asymmetric
Cyclopropanation of Diazooxindoles with Olefins: Synthesis and Spectroscopic Analysis.
ChemPlusChem. 2020;85(8):1737–1746. doi:10.1002/cplu.202000421'
apa: 'Li, Z., Rösler, L., Herr, K., Brodrecht, M., Breitzke, H., Hofmann, K., Limbach,
H.-H., Gutmann, T., & Buntkowsky, G. (2020). Dirhodium Coordination Polymers
for Asymmetric Cyclopropanation of Diazooxindoles with Olefins: Synthesis and
Spectroscopic Analysis. ChemPlusChem, 85(8), 1737–1746. https://doi.org/10.1002/cplu.202000421'
bibtex: '@article{Li_Rösler_Herr_Brodrecht_Breitzke_Hofmann_Limbach_Gutmann_Buntkowsky_2020,
title={Dirhodium Coordination Polymers for Asymmetric Cyclopropanation of Diazooxindoles
with Olefins: Synthesis and Spectroscopic Analysis}, volume={85}, DOI={10.1002/cplu.202000421},
number={8}, journal={ChemPlusChem}, author={Li, Zhenzhong and Rösler, Lorenz and
Herr, Kevin and Brodrecht, Martin and Breitzke, Hergen and Hofmann, Kathrin and
Limbach, Hans-Heinrich and Gutmann, Torsten and Buntkowsky, Gerd}, year={2020},
pages={1737–1746} }'
chicago: 'Li, Zhenzhong, Lorenz Rösler, Kevin Herr, Martin Brodrecht, Hergen Breitzke,
Kathrin Hofmann, Hans-Heinrich Limbach, Torsten Gutmann, and Gerd Buntkowsky.
“Dirhodium Coordination Polymers for Asymmetric Cyclopropanation of Diazooxindoles
with Olefins: Synthesis and Spectroscopic Analysis.” ChemPlusChem 85, no.
8 (2020): 1737–1746. https://doi.org/10.1002/cplu.202000421.'
ieee: 'Z. Li et al., “Dirhodium Coordination Polymers for Asymmetric Cyclopropanation
of Diazooxindoles with Olefins: Synthesis and Spectroscopic Analysis,” ChemPlusChem,
vol. 85, no. 8, pp. 1737–1746, 2020, doi: 10.1002/cplu.202000421.'
mla: 'Li, Zhenzhong, et al. “Dirhodium Coordination Polymers for Asymmetric Cyclopropanation
of Diazooxindoles with Olefins: Synthesis and Spectroscopic Analysis.” ChemPlusChem,
vol. 85, no. 8, 2020, pp. 1737–1746, doi:10.1002/cplu.202000421.'
short: Z. Li, L. Rösler, K. Herr, M. Brodrecht, H. Breitzke, K. Hofmann, H.-H. Limbach,
T. Gutmann, G. Buntkowsky, ChemPlusChem 85 (2020) 1737–1746.
date_created: 2026-02-07T15:54:32Z
date_updated: 2026-02-17T16:15:37Z
doi: 10.1002/cplu.202000421
extern: '1'
intvolume: ' 85'
issue: '8'
language:
- iso: eng
page: 1737–1746
publication: ChemPlusChem
publication_identifier:
issn:
- 2192-6506
status: public
title: 'Dirhodium Coordination Polymers for Asymmetric Cyclopropanation of Diazooxindoles
with Olefins: Synthesis and Spectroscopic Analysis'
type: journal_article
user_id: '100715'
volume: 85
year: '2020'
...
---
_id: '63985'
abstract:
- lang: eng
text: An experimental study is presented for the reverse micellar system of 15%
by mass polydisperse hexaethylene glycol monodecylether (C10E6) in cyclohexane
with varying amounts of added water up to 4% by mass. Measurements of viscosity
and self-diffusion coefficients were taken as a function of temperature between
10 and 45 °C at varying sample water loads but fixed C10E6/cyclohexane composition.
The results were used to inspect the validity of the Stokes–Einstein equation
for this system. Unreasonably small reverse average micelle radii and aggregation
numbers were obtained with the Stokes–Einstein equation, but reasonable values
for these quantities were obtained using the ratio of surfactant-to-cyclohexane
self-diffusion coefficients. While bulk viscosity increased with increasing water
load, a concurrent expected decrease of self-diffusion coefficient was only observed
for the surfactant and water but not for cyclohexane, which showed independence
of water load. Moreover, a spread of self-diffusion coefficients was observed
for the protons associated with the ethylene oxide repeat unit in samples with
polydisperse C10E6 but not in a sample with monodisperse C10E6. These findings
were interpreted by the presence of reverse micelle to reverse micelle hopping
motions that with higher water load become increasingly selective toward C10E6
molecules with short ethylene oxide repeat units, while those with long ethylene
oxide repeat units remain trapped within the reverse micelle because of the increased
hydrogen bonding interactions with the water inside the growing core of the reverse
micelle. Despite the observed breakdown of the Stokes–Einstein equation, the temperature
dependence of the viscosities and self-diffusion coefficients was found to follow
Arrhenius behavior over the investigated range of temperatures.
author:
- first_name: Markus M.
full_name: Hoffmann, Markus M.
last_name: Hoffmann
- first_name: Matthew D.
full_name: Too, Matthew D.
last_name: Too
- first_name: Michael
full_name: Vogel, Michael
last_name: Vogel
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Hoffmann MM, Too MD, Vogel M, Gutmann T, Buntkowsky G. Breakdown of the Stokes–Einstein
Equation for Solutions of Water in Oil Reverse Micelles. Journal of Physical
Chemistry B. 2020;124(41):9115–9125. doi:10.1021/acs.jpcb.0c06124
apa: Hoffmann, M. M., Too, M. D., Vogel, M., Gutmann, T., & Buntkowsky, G. (2020).
Breakdown of the Stokes–Einstein Equation for Solutions of Water in Oil Reverse
Micelles. Journal of Physical Chemistry B, 124(41), 9115–9125. https://doi.org/10.1021/acs.jpcb.0c06124
bibtex: '@article{Hoffmann_Too_Vogel_Gutmann_Buntkowsky_2020, title={Breakdown of
the Stokes–Einstein Equation for Solutions of Water in Oil Reverse Micelles},
volume={124}, DOI={10.1021/acs.jpcb.0c06124},
number={41}, journal={Journal of Physical Chemistry B}, publisher={American Chemical
Society}, author={Hoffmann, Markus M. and Too, Matthew D. and Vogel, Michael and
Gutmann, Torsten and Buntkowsky, Gerd}, year={2020}, pages={9115–9125} }'
chicago: 'Hoffmann, Markus M., Matthew D. Too, Michael Vogel, Torsten Gutmann, and
Gerd Buntkowsky. “Breakdown of the Stokes–Einstein Equation for Solutions of Water
in Oil Reverse Micelles.” Journal of Physical Chemistry B 124, no. 41 (2020):
9115–9125. https://doi.org/10.1021/acs.jpcb.0c06124.'
ieee: 'M. M. Hoffmann, M. D. Too, M. Vogel, T. Gutmann, and G. Buntkowsky, “Breakdown
of the Stokes–Einstein Equation for Solutions of Water in Oil Reverse Micelles,”
Journal of Physical Chemistry B, vol. 124, no. 41, pp. 9115–9125, 2020,
doi: 10.1021/acs.jpcb.0c06124.'
mla: Hoffmann, Markus M., et al. “Breakdown of the Stokes–Einstein Equation for
Solutions of Water in Oil Reverse Micelles.” Journal of Physical Chemistry
B, vol. 124, no. 41, American Chemical Society, 2020, pp. 9115–9125, doi:10.1021/acs.jpcb.0c06124.
short: M.M. Hoffmann, M.D. Too, M. Vogel, T. Gutmann, G. Buntkowsky, Journal of
Physical Chemistry B 124 (2020) 9115–9125.
date_created: 2026-02-07T15:45:38Z
date_updated: 2026-02-17T16:16:50Z
doi: 10.1021/acs.jpcb.0c06124
extern: '1'
intvolume: ' 124'
issue: '41'
language:
- iso: eng
page: 9115–9125
publication: Journal of Physical Chemistry B
publisher: American Chemical Society
status: public
title: Breakdown of the Stokes–Einstein Equation for Solutions of Water in Oil Reverse
Micelles
type: journal_article
user_id: '100715'
volume: 124
year: '2020'
...
---
_id: '63976'
abstract:
- lang: eng
text: Mesoporous silica materials (SBA-15) with surfaces modified with aminopropyltriethoxysilane
(APTES) of two different surface coverages were synthesized, and their structural
pore characteristics were analyzed. These two mesoporous silica materials were
impregnated with various solutions of radicals in a nonionic surfactant solvent.
Differential scanning calorimetry (DSC) analysis of the impregnated mesoporous
silica materials confirmed that the surfactant solutions were confined into the
pores. Dynamic nuclear polarization (DNP)-enhanced solid-state 13C magic-angle
spinning (MAS) NMR spectra recorded for these impregnated mesoporous silica materials
showed the presence of superimposed spectra from direct and indirect channel polarization
transfer processes not only for the confined surfactant solvent but also for the
APTES surface modification. The observation of the indirect channel resonances
implies that the surfactant solvents as well as the APTES exhibit molecular motions
with correlation times on the order of or faster than the inverse Larmor frequency.
Such motions are unexpected at the experimental temperature conditions of ∼120
K in particular for the immobilized APTES. Spectral line widths and intensities
of the observed 13C MAS NMR spectra were sensitive to the specific combination
of the radical, surfactant solvent, and APTES surface coverage. One particular
combination showed identical widths and intensities for the direct and the oppositely
phased indirect channel resonances, resulting in a blank spectrum. The differences
in line widths and intensities are discussed with respect to the structural organization
of the polarizing agent and surfactant within the pores and the complex interplay
of intermolecular interactions between these constituents.
author:
- first_name: Markus M.
full_name: Hoffmann, Markus M.
last_name: Hoffmann
- first_name: Sarah
full_name: Bothe, Sarah
last_name: Bothe
- first_name: Martin
full_name: Brodrecht, Martin
last_name: Brodrecht
- first_name: Vytautas
full_name: Klimavicius, Vytautas
last_name: Klimavicius
- first_name: Nadia B.
full_name: Haro-Mares, Nadia B.
last_name: Haro-Mares
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Hoffmann MM, Bothe S, Brodrecht M, et al. Direct and Indirect Dynamic Nuclear
Polarization Transfer Observed in Mesoporous Materials Impregnated with Nonionic
Surfactant Solutions of Polar Polarizing Agents. Journal of Physical Chemistry
C. 2020;124(9):5145–5156. doi:10.1021/acs.jpcc.9b10504
apa: Hoffmann, M. M., Bothe, S., Brodrecht, M., Klimavicius, V., Haro-Mares, N.
B., Gutmann, T., & Buntkowsky, G. (2020). Direct and Indirect Dynamic Nuclear
Polarization Transfer Observed in Mesoporous Materials Impregnated with Nonionic
Surfactant Solutions of Polar Polarizing Agents. Journal of Physical Chemistry
C, 124(9), 5145–5156. https://doi.org/10.1021/acs.jpcc.9b10504
bibtex: '@article{Hoffmann_Bothe_Brodrecht_Klimavicius_Haro-Mares_Gutmann_Buntkowsky_2020,
title={Direct and Indirect Dynamic Nuclear Polarization Transfer Observed in Mesoporous
Materials Impregnated with Nonionic Surfactant Solutions of Polar Polarizing Agents},
volume={124}, DOI={10.1021/acs.jpcc.9b10504},
number={9}, journal={Journal of Physical Chemistry C}, publisher={American Chemical
Society}, author={Hoffmann, Markus M. and Bothe, Sarah and Brodrecht, Martin and
Klimavicius, Vytautas and Haro-Mares, Nadia B. and Gutmann, Torsten and Buntkowsky,
Gerd}, year={2020}, pages={5145–5156} }'
chicago: 'Hoffmann, Markus M., Sarah Bothe, Martin Brodrecht, Vytautas Klimavicius,
Nadia B. Haro-Mares, Torsten Gutmann, and Gerd Buntkowsky. “Direct and Indirect
Dynamic Nuclear Polarization Transfer Observed in Mesoporous Materials Impregnated
with Nonionic Surfactant Solutions of Polar Polarizing Agents.” Journal of
Physical Chemistry C 124, no. 9 (2020): 5145–5156. https://doi.org/10.1021/acs.jpcc.9b10504.'
ieee: 'M. M. Hoffmann et al., “Direct and Indirect Dynamic Nuclear Polarization
Transfer Observed in Mesoporous Materials Impregnated with Nonionic Surfactant
Solutions of Polar Polarizing Agents,” Journal of Physical Chemistry C,
vol. 124, no. 9, pp. 5145–5156, 2020, doi: 10.1021/acs.jpcc.9b10504.'
mla: Hoffmann, Markus M., et al. “Direct and Indirect Dynamic Nuclear Polarization
Transfer Observed in Mesoporous Materials Impregnated with Nonionic Surfactant
Solutions of Polar Polarizing Agents.” Journal of Physical Chemistry C,
vol. 124, no. 9, American Chemical Society, 2020, pp. 5145–5156, doi:10.1021/acs.jpcc.9b10504.
short: M.M. Hoffmann, S. Bothe, M. Brodrecht, V. Klimavicius, N.B. Haro-Mares, T.
Gutmann, G. Buntkowsky, Journal of Physical Chemistry C 124 (2020) 5145–5156.
date_created: 2026-02-07T15:42:36Z
date_updated: 2026-02-17T16:17:17Z
doi: 10.1021/acs.jpcc.9b10504
extern: '1'
intvolume: ' 124'
issue: '9'
language:
- iso: eng
page: 5145–5156
publication: Journal of Physical Chemistry C
publication_identifier:
issn:
- 1932-7447
publisher: American Chemical Society
status: public
title: Direct and Indirect Dynamic Nuclear Polarization Transfer Observed in Mesoporous
Materials Impregnated with Nonionic Surfactant Solutions of Polar Polarizing Agents
type: journal_article
user_id: '100715'
volume: 124
year: '2020'
...
---
_id: '63954'
abstract:
- lang: eng
text: We propose a mild and versatile synthesis protocol based on N-hydroxysuccinimide-activated
esters for the introduction of new functionalities to cellulose, using as starting
point established protocols for the tosylation of cellulose and its subsequent
reaction with a diamine linker. As a proof of concept, we describe the functionalization
of microcrystalline cellulose with a N-hydroxysuccinimide-activated ester of benzophenone,
a photoreactive functional group. Irradiation of the final product with UV light
yields a self-standing polymer film and is expected to result in cross-linking
among cellulose chains. To monitor structural changes at the molecular level,
each functionalization step is characterized by a multinuclear solid-state NMR
approach. DNP-enhanced 15N CP MAS NMR experiments reveal the formation of the
amide bond to the photoreactive linker and deliver further information about the
binding situation of nitrogen-containing groups in these materials. The flexible
synthesis protocol described here can be easily extended to a broad range of other
functionalities of interest, both for the cellulose and macromolecular research.
author:
- first_name: Pedro B.
full_name: Groszewicz, Pedro B.
last_name: Groszewicz
- first_name: Pedro
full_name: Mendes, Pedro
last_name: Mendes
- first_name: Bharti
full_name: Kumari, Bharti
last_name: Kumari
- first_name: Jonas
full_name: Lins, Jonas
last_name: Lins
- first_name: Markus
full_name: Biesalski, Markus
last_name: Biesalski
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: 'Groszewicz PB, Mendes P, Kumari B, et al. N-Hydroxysuccinimide-activated esters
as a functionalization agent for amino cellulose: synthesis and solid-state NMR
characterization. Cellulose. 2020;27:1239–1254. doi:10.1007/s10570-019-02864-5'
apa: 'Groszewicz, P. B., Mendes, P., Kumari, B., Lins, J., Biesalski, M., Gutmann,
T., & Buntkowsky, G. (2020). N-Hydroxysuccinimide-activated esters as a functionalization
agent for amino cellulose: synthesis and solid-state NMR characterization. Cellulose,
27, 1239–1254. https://doi.org/10.1007/s10570-019-02864-5'
bibtex: '@article{Groszewicz_Mendes_Kumari_Lins_Biesalski_Gutmann_Buntkowsky_2020,
title={N-Hydroxysuccinimide-activated esters as a functionalization agent for
amino cellulose: synthesis and solid-state NMR characterization}, volume={27},
DOI={10.1007/s10570-019-02864-5},
journal={Cellulose}, author={Groszewicz, Pedro B. and Mendes, Pedro and Kumari,
Bharti and Lins, Jonas and Biesalski, Markus and Gutmann, Torsten and Buntkowsky,
Gerd}, year={2020}, pages={1239–1254} }'
chicago: 'Groszewicz, Pedro B., Pedro Mendes, Bharti Kumari, Jonas Lins, Markus
Biesalski, Torsten Gutmann, and Gerd Buntkowsky. “N-Hydroxysuccinimide-Activated
Esters as a Functionalization Agent for Amino Cellulose: Synthesis and Solid-State
NMR Characterization.” Cellulose 27 (2020): 1239–1254. https://doi.org/10.1007/s10570-019-02864-5.'
ieee: 'P. B. Groszewicz et al., “N-Hydroxysuccinimide-activated esters as
a functionalization agent for amino cellulose: synthesis and solid-state NMR characterization,”
Cellulose, vol. 27, pp. 1239–1254, 2020, doi: 10.1007/s10570-019-02864-5.'
mla: 'Groszewicz, Pedro B., et al. “N-Hydroxysuccinimide-Activated Esters as a Functionalization
Agent for Amino Cellulose: Synthesis and Solid-State NMR Characterization.” Cellulose,
vol. 27, 2020, pp. 1239–1254, doi:10.1007/s10570-019-02864-5.'
short: P.B. Groszewicz, P. Mendes, B. Kumari, J. Lins, M. Biesalski, T. Gutmann,
G. Buntkowsky, Cellulose 27 (2020) 1239–1254.
date_created: 2026-02-07T15:35:03Z
date_updated: 2026-02-17T16:18:08Z
doi: 10.1007/s10570-019-02864-5
extern: '1'
intvolume: ' 27'
language:
- iso: eng
page: 1239–1254
publication: Cellulose
publication_identifier:
issn:
- 0969-0239
status: public
title: 'N-Hydroxysuccinimide-activated esters as a functionalization agent for amino
cellulose: synthesis and solid-state NMR characterization'
type: journal_article
user_id: '100715'
volume: 27
year: '2020'
...
---
_id: '63953'
abstract:
- lang: eng
text: Most porous polymers are notoriously hard to characterize due to their amorphous
and completely insoluble nature. On the other hand, they are an interesting class
of materials for sorption, catalytic, and electrode applications, thus they warrant
in-depth studies. In this contribution, we elaborate on the possibilities that
dynamic nuclear polarization offers towards the investigation of the structure
of porous polymers. We discuss the advantages and disadvantages of this technique
in the investigation of model polymers.
author:
- first_name: Sven
full_name: Grätz, Sven
last_name: Grätz
- first_name: Marcos
full_name: Olivera Junior, Marcos
last_name: Olivera Junior
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Lars
full_name: Borchardt, Lars
last_name: Borchardt
citation:
ama: Grätz S, Olivera Junior M, Gutmann T, Borchardt L. A comprehensive approach
for the characterization of porous polymers using 13C and 15N dynamic nuclear
polarization NMR spectroscopy. Physical Chemistry Chemical Physics. 2020;22(40):23307–23314.
doi:10.1039/D0CP04010J
apa: Grätz, S., Olivera Junior, M., Gutmann, T., & Borchardt, L. (2020). A comprehensive
approach for the characterization of porous polymers using 13C and 15N dynamic
nuclear polarization NMR spectroscopy. Physical Chemistry Chemical Physics,
22(40), 23307–23314. https://doi.org/10.1039/D0CP04010J
bibtex: '@article{Grätz_Olivera Junior_Gutmann_Borchardt_2020, title={A comprehensive
approach for the characterization of porous polymers using 13C and 15N dynamic
nuclear polarization NMR spectroscopy}, volume={22}, DOI={10.1039/D0CP04010J},
number={40}, journal={Physical Chemistry Chemical Physics}, publisher={The Royal
Society of Chemistry}, author={Grätz, Sven and Olivera Junior, Marcos and Gutmann,
Torsten and Borchardt, Lars}, year={2020}, pages={23307–23314} }'
chicago: 'Grätz, Sven, Marcos Olivera Junior, Torsten Gutmann, and Lars Borchardt.
“A Comprehensive Approach for the Characterization of Porous Polymers Using 13C
and 15N Dynamic Nuclear Polarization NMR Spectroscopy.” Physical Chemistry
Chemical Physics 22, no. 40 (2020): 23307–23314. https://doi.org/10.1039/D0CP04010J.'
ieee: 'S. Grätz, M. Olivera Junior, T. Gutmann, and L. Borchardt, “A comprehensive
approach for the characterization of porous polymers using 13C and 15N dynamic
nuclear polarization NMR spectroscopy,” Physical Chemistry Chemical Physics,
vol. 22, no. 40, pp. 23307–23314, 2020, doi: 10.1039/D0CP04010J.'
mla: Grätz, Sven, et al. “A Comprehensive Approach for the Characterization of Porous
Polymers Using 13C and 15N Dynamic Nuclear Polarization NMR Spectroscopy.” Physical
Chemistry Chemical Physics, vol. 22, no. 40, The Royal Society of Chemistry,
2020, pp. 23307–23314, doi:10.1039/D0CP04010J.
short: S. Grätz, M. Olivera Junior, T. Gutmann, L. Borchardt, Physical Chemistry
Chemical Physics 22 (2020) 23307–23314.
date_created: 2026-02-07T15:34:42Z
date_updated: 2026-02-17T16:18:14Z
doi: 10.1039/D0CP04010J
extern: '1'
intvolume: ' 22'
issue: '40'
language:
- iso: eng
page: 23307–23314
publication: Physical Chemistry Chemical Physics
publisher: The Royal Society of Chemistry
status: public
title: A comprehensive approach for the characterization of porous polymers using
13C and 15N dynamic nuclear polarization NMR spectroscopy
type: journal_article
user_id: '100715'
volume: 22
year: '2020'
...
---
_id: '64035'
abstract:
- lang: eng
text: Trityl and nitroxide radicals are connected by pi-topologically controlled
aryl linkers, generating genuinely g-engineered biradicals. They serve as a typical
model for biradicals in which the exchange (J) and hyperfine interactions compete
with the g-difference electronic Zeeman interactions. The magnetic properties
underlying the biradical spin Hamiltonian for solution, including J’s, have been
determined by multifrequency CW-ESR and H-1 ENDOR spectroscopy and compared with
those obtained by quantum chemical calculations. The experimental J values were
in good agreement with the quantum chemical calculations. The g-engineered biradicals
have been tested as a prototype for AWG (Arbitrary Wave Generator)-based spin
manipulation techniques, which enable GRAPE (GRAdient Pulse Engineering) microwave
control of spins in molecular magnetic resonance spectroscopy for use in molecular
spin quantum computers, demonstrating efficient signal enhancement of specific
weakened hyperfine signals. Dynamic nuclear polarization (DNP) effects of the
biradicals for 400 MHz nuclear magnetic resonance signal enhancement have been
examined, giving efficiency factors of 30 for H-1 and 27.8 for C-13 nuclei. The
marked DNP results show the feasibility of these biradicals for hyperpolarization.
author:
- first_name: K.
full_name: Sato, K.
last_name: Sato
- first_name: R.
full_name: Hirao, R.
last_name: Hirao
- first_name: I.
full_name: Timofeev, I.
last_name: Timofeev
- first_name: O.
full_name: Krumkacheva, O.
last_name: Krumkacheva
- first_name: E.
full_name: Zaytseva, E.
last_name: Zaytseva
- first_name: O.
full_name: Rogozhnikova, O.
last_name: Rogozhnikova
- first_name: V. M.
full_name: Tormyshev, V. M.
last_name: Tormyshev
- first_name: D.
full_name: Trukhin, D.
last_name: Trukhin
- first_name: E.
full_name: Bagryanskaya, E.
last_name: Bagryanskaya
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: C.
full_name: Klimavicius, C.
last_name: Klimavicius
- first_name: G.
full_name: Buntkowsky, G.
last_name: Buntkowsky
- first_name: K.
full_name: Sugisaki, K.
last_name: Sugisaki
- first_name: S.
full_name: Nakazawa, S.
last_name: Nakazawa
- first_name: H.
full_name: Matsuoka, H.
last_name: Matsuoka
- first_name: K.
full_name: Toyota, K.
last_name: Toyota
- first_name: D.
full_name: Shiomi, D.
last_name: Shiomi
- first_name: T.
full_name: Takui, T.
last_name: Takui
citation:
ama: Sato K, Hirao R, Timofeev I, et al. Trityl-Aryl-Nitroxide-Based Genuinely g-Engineered
Biradicals, As Studied by Dynamic Nuclear Polarization, Multifrequency ESR/ENDOR,
Arbitrary Wave Generator Pulse Microwave Waveform Spectroscopy, and Quantum Chemical
Calculations. Journal of Physical Chemistry A. 2019;123(34):7507–7517.
doi:10.1021/acs.jpca.9b07169
apa: Sato, K., Hirao, R., Timofeev, I., Krumkacheva, O., Zaytseva, E., Rogozhnikova,
O., Tormyshev, V. M., Trukhin, D., Bagryanskaya, E., Gutmann, T., Klimavicius,
C., Buntkowsky, G., Sugisaki, K., Nakazawa, S., Matsuoka, H., Toyota, K., Shiomi,
D., & Takui, T. (2019). Trityl-Aryl-Nitroxide-Based Genuinely g-Engineered
Biradicals, As Studied by Dynamic Nuclear Polarization, Multifrequency ESR/ENDOR,
Arbitrary Wave Generator Pulse Microwave Waveform Spectroscopy, and Quantum Chemical
Calculations. Journal of Physical Chemistry A, 123(34), 7507–7517.
https://doi.org/10.1021/acs.jpca.9b07169
bibtex: '@article{Sato_Hirao_Timofeev_Krumkacheva_Zaytseva_Rogozhnikova_Tormyshev_Trukhin_Bagryanskaya_Gutmann_et
al._2019, title={Trityl-Aryl-Nitroxide-Based Genuinely g-Engineered Biradicals,
As Studied by Dynamic Nuclear Polarization, Multifrequency ESR/ENDOR, Arbitrary
Wave Generator Pulse Microwave Waveform Spectroscopy, and Quantum Chemical Calculations},
volume={123}, DOI={10.1021/acs.jpca.9b07169},
number={34}, journal={Journal of Physical Chemistry A}, author={Sato, K. and Hirao,
R. and Timofeev, I. and Krumkacheva, O. and Zaytseva, E. and Rogozhnikova, O.
and Tormyshev, V. M. and Trukhin, D. and Bagryanskaya, E. and Gutmann, Torsten
and et al.}, year={2019}, pages={7507–7517} }'
chicago: 'Sato, K., R. Hirao, I. Timofeev, O. Krumkacheva, E. Zaytseva, O. Rogozhnikova,
V. M. Tormyshev, et al. “Trityl-Aryl-Nitroxide-Based Genuinely g-Engineered Biradicals,
As Studied by Dynamic Nuclear Polarization, Multifrequency ESR/ENDOR, Arbitrary
Wave Generator Pulse Microwave Waveform Spectroscopy, and Quantum Chemical Calculations.”
Journal of Physical Chemistry A 123, no. 34 (2019): 7507–7517. https://doi.org/10.1021/acs.jpca.9b07169.'
ieee: 'K. Sato et al., “Trityl-Aryl-Nitroxide-Based Genuinely g-Engineered
Biradicals, As Studied by Dynamic Nuclear Polarization, Multifrequency ESR/ENDOR,
Arbitrary Wave Generator Pulse Microwave Waveform Spectroscopy, and Quantum Chemical
Calculations,” Journal of Physical Chemistry A, vol. 123, no. 34, pp. 7507–7517,
2019, doi: 10.1021/acs.jpca.9b07169.'
mla: Sato, K., et al. “Trityl-Aryl-Nitroxide-Based Genuinely g-Engineered Biradicals,
As Studied by Dynamic Nuclear Polarization, Multifrequency ESR/ENDOR, Arbitrary
Wave Generator Pulse Microwave Waveform Spectroscopy, and Quantum Chemical Calculations.”
Journal of Physical Chemistry A, vol. 123, no. 34, 2019, pp. 7507–7517,
doi:10.1021/acs.jpca.9b07169.
short: K. Sato, R. Hirao, I. Timofeev, O. Krumkacheva, E. Zaytseva, O. Rogozhnikova,
V.M. Tormyshev, D. Trukhin, E. Bagryanskaya, T. Gutmann, C. Klimavicius, G. Buntkowsky,
K. Sugisaki, S. Nakazawa, H. Matsuoka, K. Toyota, D. Shiomi, T. Takui, Journal
of Physical Chemistry A 123 (2019) 7507–7517.
date_created: 2026-02-07T16:07:58Z
date_updated: 2026-02-17T16:13:42Z
doi: 10.1021/acs.jpca.9b07169
extern: '1'
intvolume: ' 123'
issue: '34'
language:
- iso: eng
page: 7507–7517
publication: Journal of Physical Chemistry A
status: public
title: Trityl-Aryl-Nitroxide-Based Genuinely g-Engineered Biradicals, As Studied by
Dynamic Nuclear Polarization, Multifrequency ESR/ENDOR, Arbitrary Wave Generator
Pulse Microwave Waveform Spectroscopy, and Quantum Chemical Calculations
type: journal_article
user_id: '100715'
volume: 123
year: '2019'
...
---
_id: '64038'
abstract:
- lang: eng
text: An efficient approach for the characterization of core–shell polymer hybrid
nanoparticles is presented. Selective signal amplification by dynamic nuclear
polarization (DNP) is employed to shed more light on the molecular structure of
surface sites and shell of the particles. DNP-enhanced 29Si solid-state NMR is
used to clearly prove the core–shell structure of the nanoparticles as well as
the success of their functionalization with low amounts of trimethylsiloxy groups.
By combination of DNP-enhanced 1H → 29Si and 1H → 13C cross-polarization magic-angle-spinning
experiments, differently substituted alkoxysilane moieties, namely, methacryloxypropyltriethoxysilane,
3-methacryloxypropyltriisopropoxysilane, and 3-methacryloxypropyltris(methoxyethoxy)silane,
are investigated, revealing various cross-linking capabilities of the particle
shell. This knowledge about efficiency of surface functionalization and cross-linking
sites strongly influences the application and properties of the core–shell polymer
hybrid particles, for instance, as materials for photonic crystals, particle film
formation, and coatings. This is of high importance for the design of tailor-made
core–shell particle architectures.
author:
- first_name: Timmy
full_name: Schäfer, Timmy
last_name: Schäfer
- first_name: Steffen
full_name: Vowinkel, Steffen
last_name: Vowinkel
- first_name: Hergen
full_name: Breitzke, Hergen
last_name: Breitzke
- first_name: Markus
full_name: Gallei, Markus
last_name: Gallei
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
citation:
ama: Schäfer T, Vowinkel S, Breitzke H, Gallei M, Gutmann T. Selective DNP Signal
Amplification To Probe Structures of Core–Shell Polymer Hybrid Nanoparticles.
Journal of Physical Chemistry C. 2019;123(1):644–652. doi:10.1021/acs.jpcc.8b07969
apa: Schäfer, T., Vowinkel, S., Breitzke, H., Gallei, M., & Gutmann, T. (2019).
Selective DNP Signal Amplification To Probe Structures of Core–Shell Polymer Hybrid
Nanoparticles. Journal of Physical Chemistry C, 123(1), 644–652.
https://doi.org/10.1021/acs.jpcc.8b07969
bibtex: '@article{Schäfer_Vowinkel_Breitzke_Gallei_Gutmann_2019, title={Selective
DNP Signal Amplification To Probe Structures of Core–Shell Polymer Hybrid Nanoparticles},
volume={123}, DOI={10.1021/acs.jpcc.8b07969},
number={1}, journal={Journal of Physical Chemistry C}, publisher={American Chemical
Society}, author={Schäfer, Timmy and Vowinkel, Steffen and Breitzke, Hergen and
Gallei, Markus and Gutmann, Torsten}, year={2019}, pages={644–652} }'
chicago: 'Schäfer, Timmy, Steffen Vowinkel, Hergen Breitzke, Markus Gallei, and
Torsten Gutmann. “Selective DNP Signal Amplification To Probe Structures of Core–Shell
Polymer Hybrid Nanoparticles.” Journal of Physical Chemistry C 123, no.
1 (2019): 644–652. https://doi.org/10.1021/acs.jpcc.8b07969.'
ieee: 'T. Schäfer, S. Vowinkel, H. Breitzke, M. Gallei, and T. Gutmann, “Selective
DNP Signal Amplification To Probe Structures of Core–Shell Polymer Hybrid Nanoparticles,”
Journal of Physical Chemistry C, vol. 123, no. 1, pp. 644–652, 2019, doi:
10.1021/acs.jpcc.8b07969.'
mla: Schäfer, Timmy, et al. “Selective DNP Signal Amplification To Probe Structures
of Core–Shell Polymer Hybrid Nanoparticles.” Journal of Physical Chemistry
C, vol. 123, no. 1, American Chemical Society, 2019, pp. 644–652, doi:10.1021/acs.jpcc.8b07969.
short: T. Schäfer, S. Vowinkel, H. Breitzke, M. Gallei, T. Gutmann, Journal of Physical
Chemistry C 123 (2019) 644–652.
date_created: 2026-02-07T16:08:48Z
date_updated: 2026-02-17T16:13:34Z
doi: 10.1021/acs.jpcc.8b07969
extern: '1'
intvolume: ' 123'
issue: '1'
language:
- iso: eng
page: 644–652
publication: Journal of Physical Chemistry C
publication_identifier:
issn:
- 1932-7447
publisher: American Chemical Society
status: public
title: Selective DNP Signal Amplification To Probe Structures of Core–Shell Polymer
Hybrid Nanoparticles
type: journal_article
user_id: '100715'
volume: 123
year: '2019'
...
---
_id: '64033'
abstract:
- lang: eng
text: Abstract The reactions of three metal nanoparticle (MNP) systems Ru/dppb,
RuPt/dppb, Pt/dppb (dppb=1,4-bis(diphenylphosphino)butane) with gaseous D2 at
room temperature and different gas pressures have been studied using 1H gas phase
NMR, GC-MS and solid state 13C and 31P MAS NMR. The main product is gaseous HD
arising from the reaction of D2 with surface hydrogen sites created during the
synthesis of the nanoparticles. In a side reaction, some of the dppb ligands are
decomposed producing surface phosphorus species and gaseous partially deuterated
butane and cyclohexane. These findings are fundamental for detailed studies of
the reaction kinetics of these particles towards H2 or D2 gas.
author:
- first_name: Niels
full_name: Rothermel, Niels
last_name: Rothermel
- first_name: Tobias
full_name: Röther, Tobias
last_name: Röther
- first_name: Tuğçe
full_name: Ayvalı, Tuğçe
last_name: Ayvalı
- first_name: Luis M.
full_name: Martínez-Prieto, Luis M.
last_name: Martínez-Prieto
- first_name: Karine
full_name: Philippot, Karine
last_name: Philippot
- first_name: Hans-Heinrich
full_name: Limbach, Hans-Heinrich
last_name: Limbach
- first_name: Bruno
full_name: Chaudret, Bruno
last_name: Chaudret
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Rothermel N, Röther T, Ayvalı T, et al. Reactions of D2 with 1,4-Bis(diphenylphosphino)
butane-Stabilized Metal Nanoparticles-A Combined Gas-phase NMR, GC-MS and Solid-state
NMR Study. ChemCatChem. 2019;11(5):1465–1471. doi:10.1002/cctc.201801981
apa: Rothermel, N., Röther, T., Ayvalı, T., Martínez-Prieto, L. M., Philippot, K.,
Limbach, H.-H., Chaudret, B., Gutmann, T., & Buntkowsky, G. (2019). Reactions
of D2 with 1,4-Bis(diphenylphosphino) butane-Stabilized Metal Nanoparticles-A
Combined Gas-phase NMR, GC-MS and Solid-state NMR Study. ChemCatChem, 11(5),
1465–1471. https://doi.org/10.1002/cctc.201801981
bibtex: '@article{Rothermel_Röther_Ayvalı_Martínez-Prieto_Philippot_Limbach_Chaudret_Gutmann_Buntkowsky_2019,
title={Reactions of D2 with 1,4-Bis(diphenylphosphino) butane-Stabilized Metal
Nanoparticles-A Combined Gas-phase NMR, GC-MS and Solid-state NMR Study}, volume={11},
DOI={10.1002/cctc.201801981},
number={5}, journal={ChemCatChem}, author={Rothermel, Niels and Röther, Tobias
and Ayvalı, Tuğçe and Martínez-Prieto, Luis M. and Philippot, Karine and Limbach,
Hans-Heinrich and Chaudret, Bruno and Gutmann, Torsten and Buntkowsky, Gerd},
year={2019}, pages={1465–1471} }'
chicago: 'Rothermel, Niels, Tobias Röther, Tuğçe Ayvalı, Luis M. Martínez-Prieto,
Karine Philippot, Hans-Heinrich Limbach, Bruno Chaudret, Torsten Gutmann, and
Gerd Buntkowsky. “Reactions of D2 with 1,4-Bis(Diphenylphosphino) Butane-Stabilized
Metal Nanoparticles-A Combined Gas-Phase NMR, GC-MS and Solid-State NMR Study.”
ChemCatChem 11, no. 5 (2019): 1465–1471. https://doi.org/10.1002/cctc.201801981.'
ieee: 'N. Rothermel et al., “Reactions of D2 with 1,4-Bis(diphenylphosphino)
butane-Stabilized Metal Nanoparticles-A Combined Gas-phase NMR, GC-MS and Solid-state
NMR Study,” ChemCatChem, vol. 11, no. 5, pp. 1465–1471, 2019, doi: 10.1002/cctc.201801981.'
mla: Rothermel, Niels, et al. “Reactions of D2 with 1,4-Bis(Diphenylphosphino) Butane-Stabilized
Metal Nanoparticles-A Combined Gas-Phase NMR, GC-MS and Solid-State NMR Study.”
ChemCatChem, vol. 11, no. 5, 2019, pp. 1465–1471, doi:10.1002/cctc.201801981.
short: N. Rothermel, T. Röther, T. Ayvalı, L.M. Martínez-Prieto, K. Philippot, H.-H.
Limbach, B. Chaudret, T. Gutmann, G. Buntkowsky, ChemCatChem 11 (2019) 1465–1471.
date_created: 2026-02-07T16:07:05Z
date_updated: 2026-02-17T16:13:47Z
doi: 10.1002/cctc.201801981
extern: '1'
intvolume: ' 11'
issue: '5'
language:
- iso: eng
page: 1465–1471
publication: ChemCatChem
status: public
title: Reactions of D2 with 1,4-Bis(diphenylphosphino) butane-Stabilized Metal Nanoparticles-A
Combined Gas-phase NMR, GC-MS and Solid-state NMR Study
type: journal_article
user_id: '100715'
volume: 11
year: '2019'
...
---
_id: '64018'
abstract:
- lang: eng
text: CO oxidation is an extensively studied reaction in heterogeneous catalysis
due to its seeming simplicity and its great importance for emission control. However,
the role of particle size and more specifically structure sensitivity in this
reaction is still controversial. In the present study, colloidal “surfactant-free”
Pt nanoparticles (NPs) in a size regime of 1–4 nm with narrow size distribution
and control over particle size were synthesized and subsequently supported on
Al2O3 to prepare model catalysts. CO oxidation was performed using Pt NPs catalysts
with particles sizes of 1, 2, 3, and 4 nm at different reaction temperatures.
It is shown that the reaction exhibits a particle size effect that depends strongly
on the reaction conditions. At 170 °C, the reaction seems to proceed within the
same kinetic regime for all particle sizes, but the surface normalized activity
depends strongly on the particle size, with maximum activity for nanoparticles
2 nm in diameter. A temperature increase to 200 °C leads to a change of the kinetic
regime that depends on the particle size. For Pt NPs 1 nm in diameter a reaction
order of 1 for O2 was observed, indicating that O2 adsorbs molecularly and dissociates
in a following step, which represents the generally accepted mechanism on Pt surfaces.
The reaction order of −1 for CO demonstrates that the surface is saturated with
CO under reaction conditions. With increasing particle size, the reaction orders
of O2 and CO change. For particles 2 nm in size, an increase in temperature also
results in reaction orders of 1 for O2 and −1 for CO; NPs of 3 and 4 nm, even
at higher temperatures, show no clear kinetic behavior that can be explained by
a single reaction mechanism. Instead, the Boudouard reaction between two adjacent
adsorbed CO molecules was identified as an important additional reaction pathway
that occurs preferentially on large particles and causes more complex kinetics.
author:
- first_name: Sarah
full_name: Neumann, Sarah
last_name: Neumann
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
- first_name: Stephen
full_name: Paul, Stephen
last_name: Paul
- first_name: Greg
full_name: Thiele, Greg
last_name: Thiele
- first_name: Heiko
full_name: Sievers, Heiko
last_name: Sievers
- first_name: Marcus
full_name: Bäumer, Marcus
last_name: Bäumer
- first_name: Sebastian
full_name: Kunz, Sebastian
last_name: Kunz
citation:
ama: Neumann S, Gutmann T, Buntkowsky G, et al. Insights into the reaction mechanism
and particle size effects of CO oxidation over supported Pt nanoparticle catalysts.
Journal of Catalysis. 2019;377:662–672. doi:10.1016/j.jcat.2019.07.049
apa: Neumann, S., Gutmann, T., Buntkowsky, G., Paul, S., Thiele, G., Sievers, H.,
Bäumer, M., & Kunz, S. (2019). Insights into the reaction mechanism and particle
size effects of CO oxidation over supported Pt nanoparticle catalysts. Journal
of Catalysis, 377, 662–672. https://doi.org/10.1016/j.jcat.2019.07.049
bibtex: '@article{Neumann_Gutmann_Buntkowsky_Paul_Thiele_Sievers_Bäumer_Kunz_2019,
title={Insights into the reaction mechanism and particle size effects of CO oxidation
over supported Pt nanoparticle catalysts}, volume={377}, DOI={10.1016/j.jcat.2019.07.049},
journal={Journal of Catalysis}, author={Neumann, Sarah and Gutmann, Torsten and
Buntkowsky, Gerd and Paul, Stephen and Thiele, Greg and Sievers, Heiko and Bäumer,
Marcus and Kunz, Sebastian}, year={2019}, pages={662–672} }'
chicago: 'Neumann, Sarah, Torsten Gutmann, Gerd Buntkowsky, Stephen Paul, Greg Thiele,
Heiko Sievers, Marcus Bäumer, and Sebastian Kunz. “Insights into the Reaction
Mechanism and Particle Size Effects of CO Oxidation over Supported Pt Nanoparticle
Catalysts.” Journal of Catalysis 377 (2019): 662–672. https://doi.org/10.1016/j.jcat.2019.07.049.'
ieee: 'S. Neumann et al., “Insights into the reaction mechanism and particle
size effects of CO oxidation over supported Pt nanoparticle catalysts,” Journal
of Catalysis, vol. 377, pp. 662–672, 2019, doi: 10.1016/j.jcat.2019.07.049.'
mla: Neumann, Sarah, et al. “Insights into the Reaction Mechanism and Particle Size
Effects of CO Oxidation over Supported Pt Nanoparticle Catalysts.” Journal
of Catalysis, vol. 377, 2019, pp. 662–672, doi:10.1016/j.jcat.2019.07.049.
short: S. Neumann, T. Gutmann, G. Buntkowsky, S. Paul, G. Thiele, H. Sievers, M.
Bäumer, S. Kunz, Journal of Catalysis 377 (2019) 662–672.
date_created: 2026-02-07T16:02:06Z
date_updated: 2026-02-17T16:14:45Z
doi: 10.1016/j.jcat.2019.07.049
extern: '1'
intvolume: ' 377'
keyword:
- Solid state NMR
- “Surfactant-free” platinum nanoparticles
- CO oxidation
- Particle size effect
- Structure sensitivity
language:
- iso: eng
page: 662–672
publication: Journal of Catalysis
status: public
title: Insights into the reaction mechanism and particle size effects of CO oxidation
over supported Pt nanoparticle catalysts
type: journal_article
user_id: '100715'
volume: 377
year: '2019'
...
---
_id: '64019'
abstract:
- lang: eng
text: A chiral zirconium-based catalyst, DUT-67-Pro containing 8-connected Zr6-clusters
is obtained by post synthetic functionalization of Zr6O6(OH)2(TDC)4(HCOO)2 (DUT-67,
TDC = 2,5-thiophenedicarboxylate) with the chiral monocarboxylic acid, L-proline.
13C and 15N solid state MAS and DNP NMR studies of DUT-67-Pro confirm the integration
of L-proline into the porous framework. The chiral MOF catalyst exhibits an excellent
catalytic activity at low temperature (298 K) with an unprecedented syn-(S,S)-product
selectivity in an asymmetric aldol addition reaction of cyclohexanone to 4-nitrobenzaldehyde
(yield = 95%, ee = 96%). Comparative catalytic studies using a molecular Zr6-cluster
model compound indicate the Zr6-moiety to be responsible for this inverse diastereoselectivity
compared to well-established L-proline organocatalysis and a mechanism is proposed
to explain the Zr6-cluster-mediated syn-selectivity. Masking residual acidic active
sites in the cluster of the framework was found to be a key prerequisite to achieve
the high enantioselectivity. The purely heterogeneous catalytic system based on
DUT-67-Pro is highly stable and can be recycled several times.
author:
- first_name: Khoa D.
full_name: Nguyen, Khoa D.
last_name: Nguyen
- first_name: Christel
full_name: Kutzscher, Christel
last_name: Kutzscher
- first_name: Sebastian
full_name: Ehrling, Sebastian
last_name: Ehrling
- first_name: Irena
full_name: Senkovska, Irena
last_name: Senkovska
- first_name: Volodymyr
full_name: Bon, Volodymyr
last_name: Bon
- first_name: Marcos
full_name: Oliveira, Marcos
last_name: Oliveira
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
- first_name: Stefan
full_name: Kaskel, Stefan
last_name: Kaskel
citation:
ama: Nguyen KD, Kutzscher C, Ehrling S, et al. Insights into the role of zirconium
in proline functionalized metal-organic frameworks attaining high enantio- and
diastereoselectivity. Journal of Catalysis. 2019;377:41–50. doi:10.1016/j.jcat.2019.07.003
apa: Nguyen, K. D., Kutzscher, C., Ehrling, S., Senkovska, I., Bon, V., Oliveira,
M., Gutmann, T., Buntkowsky, G., & Kaskel, S. (2019). Insights into the role
of zirconium in proline functionalized metal-organic frameworks attaining high
enantio- and diastereoselectivity. Journal of Catalysis, 377, 41–50.
https://doi.org/10.1016/j.jcat.2019.07.003
bibtex: '@article{Nguyen_Kutzscher_Ehrling_Senkovska_Bon_Oliveira_Gutmann_Buntkowsky_Kaskel_2019,
title={Insights into the role of zirconium in proline functionalized metal-organic
frameworks attaining high enantio- and diastereoselectivity}, volume={377}, DOI={10.1016/j.jcat.2019.07.003},
journal={Journal of Catalysis}, author={Nguyen, Khoa D. and Kutzscher, Christel
and Ehrling, Sebastian and Senkovska, Irena and Bon, Volodymyr and Oliveira, Marcos
and Gutmann, Torsten and Buntkowsky, Gerd and Kaskel, Stefan}, year={2019}, pages={41–50}
}'
chicago: 'Nguyen, Khoa D., Christel Kutzscher, Sebastian Ehrling, Irena Senkovska,
Volodymyr Bon, Marcos Oliveira, Torsten Gutmann, Gerd Buntkowsky, and Stefan Kaskel.
“Insights into the Role of Zirconium in Proline Functionalized Metal-Organic Frameworks
Attaining High Enantio- and Diastereoselectivity.” Journal of Catalysis
377 (2019): 41–50. https://doi.org/10.1016/j.jcat.2019.07.003.'
ieee: 'K. D. Nguyen et al., “Insights into the role of zirconium in proline
functionalized metal-organic frameworks attaining high enantio- and diastereoselectivity,”
Journal of Catalysis, vol. 377, pp. 41–50, 2019, doi: 10.1016/j.jcat.2019.07.003.'
mla: Nguyen, Khoa D., et al. “Insights into the Role of Zirconium in Proline Functionalized
Metal-Organic Frameworks Attaining High Enantio- and Diastereoselectivity.” Journal
of Catalysis, vol. 377, 2019, pp. 41–50, doi:10.1016/j.jcat.2019.07.003.
short: K.D. Nguyen, C. Kutzscher, S. Ehrling, I. Senkovska, V. Bon, M. Oliveira,
T. Gutmann, G. Buntkowsky, S. Kaskel, Journal of Catalysis 377 (2019) 41–50.
date_created: 2026-02-07T16:02:33Z
date_updated: 2026-02-17T16:14:42Z
doi: 10.1016/j.jcat.2019.07.003
extern: '1'
intvolume: ' 377'
keyword:
- -proline
- -selective aldol reaction
- Chirality
- Metal-organic framework
- Zirconium
language:
- iso: eng
page: 41–50
publication: Journal of Catalysis
status: public
title: Insights into the role of zirconium in proline functionalized metal-organic
frameworks attaining high enantio- and diastereoselectivity
type: journal_article
user_id: '100715'
volume: 377
year: '2019'
...
---
_id: '64023'
abstract:
- lang: eng
text: The structure of vanadium oxide (VOx) species in vanadium containing MCM-41
catalysts prepared by co-condensation or grafting, respectively, was investigated
by a combination of Raman scattering, UV-vis diffuse reflectance, ATR-IR, and
magic angle spinning (MAS) 51V as well as 29Si NMR spectroscopy techniques. Simulations
of the 51V MAS NMR spectra allowed the determination of chemical shift and quadrupole
tensor parameters, which give valuable information about the nature of the VOx
units. Structural transformations of the supported vanadium oxide species for
the catalyst in the dehydrated state and hydrated state were investigated to examine
the effect of water molecules on the VOx structures. The results reveal the presence
of different VOx structures for the hydrated samples, including dimeric species,
oligomeric chains and isolated trigonal pyramid units. Upon dehydration, the predominance
of oligomeric and/or dimeric units for the sample prepared by grafting was observed,
while a considerable amount of isolated units was additionally detected for the
sample prepared by co-condensation.
author:
- first_name: Marcos
full_name: Oliveira, Marcos
last_name: Oliveira
- first_name: Dominik
full_name: Seeburg, Dominik
last_name: Seeburg
- first_name: Jana
full_name: Weiß, Jana
last_name: Weiß
- first_name: Sebastian
full_name: Wohlrab, Sebastian
last_name: Wohlrab
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
- first_name: Ursula
full_name: Bentrup, Ursula
last_name: Bentrup
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
citation:
ama: Oliveira M, Seeburg D, Weiß J, et al. Structural characterization of vanadium
environments in MCM-41 molecular sieve catalysts by solid state 51V NMR. Catalysis
Science & Technology. 2019;9(21):6180–6190. doi:10.1039/C9CY01410A
apa: Oliveira, M., Seeburg, D., Weiß, J., Wohlrab, S., Buntkowsky, G., Bentrup,
U., & Gutmann, T. (2019). Structural characterization of vanadium environments
in MCM-41 molecular sieve catalysts by solid state 51V NMR. Catalysis Science
& Technology, 9(21), 6180–6190. https://doi.org/10.1039/C9CY01410A
bibtex: '@article{Oliveira_Seeburg_Weiß_Wohlrab_Buntkowsky_Bentrup_Gutmann_2019,
title={Structural characterization of vanadium environments in MCM-41 molecular
sieve catalysts by solid state 51V NMR}, volume={9}, DOI={10.1039/C9CY01410A},
number={21}, journal={Catalysis Science & Technology}, publisher={The Royal
Society of Chemistry}, author={Oliveira, Marcos and Seeburg, Dominik and Weiß,
Jana and Wohlrab, Sebastian and Buntkowsky, Gerd and Bentrup, Ursula and Gutmann,
Torsten}, year={2019}, pages={6180–6190} }'
chicago: 'Oliveira, Marcos, Dominik Seeburg, Jana Weiß, Sebastian Wohlrab, Gerd
Buntkowsky, Ursula Bentrup, and Torsten Gutmann. “Structural Characterization
of Vanadium Environments in MCM-41 Molecular Sieve Catalysts by Solid State 51V
NMR.” Catalysis Science & Technology 9, no. 21 (2019): 6180–6190. https://doi.org/10.1039/C9CY01410A.'
ieee: 'M. Oliveira et al., “Structural characterization of vanadium environments
in MCM-41 molecular sieve catalysts by solid state 51V NMR,” Catalysis Science
& Technology, vol. 9, no. 21, pp. 6180–6190, 2019, doi: 10.1039/C9CY01410A.'
mla: Oliveira, Marcos, et al. “Structural Characterization of Vanadium Environments
in MCM-41 Molecular Sieve Catalysts by Solid State 51V NMR.” Catalysis Science
& Technology, vol. 9, no. 21, The Royal Society of Chemistry, 2019, pp.
6180–6190, doi:10.1039/C9CY01410A.
short: M. Oliveira, D. Seeburg, J. Weiß, S. Wohlrab, G. Buntkowsky, U. Bentrup,
T. Gutmann, Catalysis Science & Technology 9 (2019) 6180–6190.
date_created: 2026-02-07T16:04:18Z
date_updated: 2026-02-17T16:14:18Z
doi: 10.1039/C9CY01410A
extern: '1'
intvolume: ' 9'
issue: '21'
language:
- iso: eng
page: 6180–6190
publication: Catalysis Science & Technology
publication_identifier:
issn:
- 2044-4753
publisher: The Royal Society of Chemistry
status: public
title: Structural characterization of vanadium environments in MCM-41 molecular sieve
catalysts by solid state 51V NMR
type: journal_article
user_id: '100715'
volume: 9
year: '2019'
...
---
_id: '64001'
abstract:
- lang: eng
text: FSLG CPMAS HETCOR is a 2D solid-state NMR experiment which provides structural
information and conformational correlation between a 1H and an X-nucleus. However,
practical application of the experiment suffers from the chemical shift referencing
problem on the indirect 1H dimension. In our paper, we present a novel 1H–1H MAS
FSLG-based approach and its application to reference the FSLG CPMAS HETCOR which
overcomes the 1H referencing in the 2D 1H-X HETCOR experiment. This approach works
excellently irrespective of the sample type over a wide range of temperature.
author:
- first_name: Bharti
full_name: Kumari, Bharti
last_name: Kumari
- first_name: Martin
full_name: Brodrecht, Martin
last_name: Brodrecht
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Hergen
full_name: Breitzke, Hergen
last_name: Breitzke
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Kumari B, Brodrecht M, Gutmann T, Breitzke H, Buntkowsky G. Efficient Referencing
of FSLG CPMAS HETCOR Spectra Using 2D 1H–1H MAS FSLG. Applied Magnetic Resonance.
2019;50(12):1399–1407. doi:10.1007/s00723-019-01156-2
apa: Kumari, B., Brodrecht, M., Gutmann, T., Breitzke, H., & Buntkowsky, G.
(2019). Efficient Referencing of FSLG CPMAS HETCOR Spectra Using 2D 1H–1H MAS
FSLG. Applied Magnetic Resonance, 50(12), 1399–1407. https://doi.org/10.1007/s00723-019-01156-2
bibtex: '@article{Kumari_Brodrecht_Gutmann_Breitzke_Buntkowsky_2019, title={Efficient
Referencing of FSLG CPMAS HETCOR Spectra Using 2D 1H–1H MAS FSLG}, volume={50},
DOI={10.1007/s00723-019-01156-2},
number={12}, journal={Applied Magnetic Resonance}, author={Kumari, Bharti and
Brodrecht, Martin and Gutmann, Torsten and Breitzke, Hergen and Buntkowsky, Gerd},
year={2019}, pages={1399–1407} }'
chicago: 'Kumari, Bharti, Martin Brodrecht, Torsten Gutmann, Hergen Breitzke, and
Gerd Buntkowsky. “Efficient Referencing of FSLG CPMAS HETCOR Spectra Using 2D
1H–1H MAS FSLG.” Applied Magnetic Resonance 50, no. 12 (2019): 1399–1407.
https://doi.org/10.1007/s00723-019-01156-2.'
ieee: 'B. Kumari, M. Brodrecht, T. Gutmann, H. Breitzke, and G. Buntkowsky, “Efficient
Referencing of FSLG CPMAS HETCOR Spectra Using 2D 1H–1H MAS FSLG,” Applied
Magnetic Resonance, vol. 50, no. 12, pp. 1399–1407, 2019, doi: 10.1007/s00723-019-01156-2.'
mla: Kumari, Bharti, et al. “Efficient Referencing of FSLG CPMAS HETCOR Spectra
Using 2D 1H–1H MAS FSLG.” Applied Magnetic Resonance, vol. 50, no. 12,
2019, pp. 1399–1407, doi:10.1007/s00723-019-01156-2.
short: B. Kumari, M. Brodrecht, T. Gutmann, H. Breitzke, G. Buntkowsky, Applied
Magnetic Resonance 50 (2019) 1399–1407.
date_created: 2026-02-07T15:53:21Z
date_updated: 2026-02-17T16:15:43Z
doi: 10.1007/s00723-019-01156-2
extern: '1'
intvolume: ' 50'
issue: '12'
language:
- iso: eng
page: 1399–1407
publication: Applied Magnetic Resonance
publication_identifier:
issn:
- 1613-7507
status: public
title: Efficient Referencing of FSLG CPMAS HETCOR Spectra Using 2D 1H–1H MAS FSLG
type: journal_article
user_id: '100715'
volume: 50
year: '2019'
...
---
_id: '63991'
abstract:
- lang: eng
text: A series of 1 and 2 nm sized platinum nanoparticles (Pt-NPs) deposited on
different support materials, namely, gamma-alumina (gamma-Al2O3), titanium dioxide
(TiO2), silicon dioxide (SiO2) and fumed silica are investigated by solid-state
NMR and dynamic nuclear polarization enhanced NMR spectroscopy (DNP). DNP signal
enhancement factors up to 170 enable gaining deeper insight into the surface chemistry
of Pt-NPs. Carbon monoxide is used as a probe molecule to analyze the adsorption
process and the surface chemistry on the supported Pt-NPs. The studied systems
show significant catalytic activity in carbon monoxide oxidation on their surface
at room temperature. The underlying catalytic mechanism is the water-gas shift
reaction. In the case of alumina as the support the produced CO2 reacts with the
surface to form carbonate, which is revealed by solid-state NMR. A similar carbonate
formation is also observed when physical mixtures of neat alumina with silica,
fumed silica and titania supported Pt-NPs are studied.
author:
- first_name: V.
full_name: Klimavicius, V.
last_name: Klimavicius
- first_name: S.
full_name: Neumann, S.
last_name: Neumann
- first_name: S.
full_name: Kunz, S.
last_name: Kunz
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: G.
full_name: Buntkowsky, G.
last_name: Buntkowsky
citation:
ama: Klimavicius V, Neumann S, Kunz S, Gutmann T, Buntkowsky G. Room temperature
CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state NMR
and DNP spectroscopy. Catalysis Science & Technology. 2019;9(14):3743–3752.
doi:10.1039/c9cy00684b
apa: Klimavicius, V., Neumann, S., Kunz, S., Gutmann, T., & Buntkowsky, G. (2019).
Room temperature CO oxidation catalysed by supported Pt nanoparticles revealed
by solid-state NMR and DNP spectroscopy. Catalysis Science & Technology,
9(14), 3743–3752. https://doi.org/10.1039/c9cy00684b
bibtex: '@article{Klimavicius_Neumann_Kunz_Gutmann_Buntkowsky_2019, title={Room
temperature CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state
NMR and DNP spectroscopy}, volume={9}, DOI={10.1039/c9cy00684b},
number={14}, journal={Catalysis Science & Technology}, author={Klimavicius,
V. and Neumann, S. and Kunz, S. and Gutmann, Torsten and Buntkowsky, G.}, year={2019},
pages={3743–3752} }'
chicago: 'Klimavicius, V., S. Neumann, S. Kunz, Torsten Gutmann, and G. Buntkowsky.
“Room Temperature CO Oxidation Catalysed by Supported Pt Nanoparticles Revealed
by Solid-State NMR and DNP Spectroscopy.” Catalysis Science & Technology
9, no. 14 (2019): 3743–3752. https://doi.org/10.1039/c9cy00684b.'
ieee: 'V. Klimavicius, S. Neumann, S. Kunz, T. Gutmann, and G. Buntkowsky, “Room
temperature CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state
NMR and DNP spectroscopy,” Catalysis Science & Technology, vol. 9,
no. 14, pp. 3743–3752, 2019, doi: 10.1039/c9cy00684b.'
mla: Klimavicius, V., et al. “Room Temperature CO Oxidation Catalysed by Supported
Pt Nanoparticles Revealed by Solid-State NMR and DNP Spectroscopy.” Catalysis
Science & Technology, vol. 9, no. 14, 2019, pp. 3743–3752, doi:10.1039/c9cy00684b.
short: V. Klimavicius, S. Neumann, S. Kunz, T. Gutmann, G. Buntkowsky, Catalysis
Science & Technology 9 (2019) 3743–3752.
date_created: 2026-02-07T15:47:21Z
date_updated: 2026-02-17T16:16:33Z
doi: 10.1039/c9cy00684b
extern: '1'
intvolume: ' 9'
issue: '14'
keyword:
- Chemistry
- gamma-alumina
- hydrogenation
- silica
- c-13
- interactions
- metal-catalysts
- particle-size
- platinum nanoparticles
- sites
- surface
- water-gas shift
language:
- iso: eng
page: 3743–3752
publication: Catalysis Science & Technology
publication_identifier:
issn:
- 2044-4753
status: public
title: Room temperature CO oxidation catalysed by supported Pt nanoparticles revealed
by solid-state NMR and DNP spectroscopy
type: journal_article
user_id: '100715'
volume: 9
year: '2019'
...
---
_id: '63969'
abstract:
- lang: eng
text: A number of Ir-N-heterocyclic carbene (Ir-NHC) complexes with asymmetric N-heterocyclic
carbene (NHC) ligands have been prepared and examined for signal amplification
by reversible exchange (SABRE). Pyridine was chosen as model compound for hyperpolarization
experiments. This substrate was examined in a solvent mixture using several Ir-NHC
complexes, which differ in their NHC ligands. The SABRE polarization was created
at 6mT and the H-1 nuclear magnetic resonancesignals were detected at 7T. We show
that asymmetric NHC ligands, because of their favorable chemistry, can adapt the
SABREactive complexes to different chemical scenarios.
author:
- first_name: S.
full_name: Hadjiali, S.
last_name: Hadjiali
- first_name: R.
full_name: Savka, R.
last_name: Savka
- first_name: M.
full_name: Plaumann, M.
last_name: Plaumann
- first_name: U.
full_name: Bommerich, U.
last_name: Bommerich
- first_name: S.
full_name: Bothe, S.
last_name: Bothe
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: T.
full_name: Ratajczyk, T.
last_name: Ratajczyk
- first_name: J.
full_name: Bernarding, J.
last_name: Bernarding
- first_name: H. H.
full_name: Limbach, H. H.
last_name: Limbach
- first_name: H.
full_name: Plenio, H.
last_name: Plenio
- first_name: G.
full_name: Buntkowsky, G.
last_name: Buntkowsky
citation:
ama: Hadjiali S, Savka R, Plaumann M, et al. Substituent Influences on the NMR Signal
Amplification of Ir Complexes with Heterocyclic Carbene Ligands. Applied Magnetic
Resonance. 2019;50(7):895–902. doi:10.1007/s00723-019-01115-x
apa: Hadjiali, S., Savka, R., Plaumann, M., Bommerich, U., Bothe, S., Gutmann, T.,
Ratajczyk, T., Bernarding, J., Limbach, H. H., Plenio, H., & Buntkowsky, G.
(2019). Substituent Influences on the NMR Signal Amplification of Ir Complexes
with Heterocyclic Carbene Ligands. Applied Magnetic Resonance, 50(7),
895–902. https://doi.org/10.1007/s00723-019-01115-x
bibtex: '@article{Hadjiali_Savka_Plaumann_Bommerich_Bothe_Gutmann_Ratajczyk_Bernarding_Limbach_Plenio_et
al._2019, title={Substituent Influences on the NMR Signal Amplification of Ir
Complexes with Heterocyclic Carbene Ligands}, volume={50}, DOI={10.1007/s00723-019-01115-x},
number={7}, journal={Applied Magnetic Resonance}, author={Hadjiali, S. and Savka,
R. and Plaumann, M. and Bommerich, U. and Bothe, S. and Gutmann, Torsten and Ratajczyk,
T. and Bernarding, J. and Limbach, H. H. and Plenio, H. and et al.}, year={2019},
pages={895–902} }'
chicago: 'Hadjiali, S., R. Savka, M. Plaumann, U. Bommerich, S. Bothe, Torsten Gutmann,
T. Ratajczyk, et al. “Substituent Influences on the NMR Signal Amplification of
Ir Complexes with Heterocyclic Carbene Ligands.” Applied Magnetic Resonance
50, no. 7 (2019): 895–902. https://doi.org/10.1007/s00723-019-01115-x.'
ieee: 'S. Hadjiali et al., “Substituent Influences on the NMR Signal Amplification
of Ir Complexes with Heterocyclic Carbene Ligands,” Applied Magnetic Resonance,
vol. 50, no. 7, pp. 895–902, 2019, doi: 10.1007/s00723-019-01115-x.'
mla: Hadjiali, S., et al. “Substituent Influences on the NMR Signal Amplification
of Ir Complexes with Heterocyclic Carbene Ligands.” Applied Magnetic Resonance,
vol. 50, no. 7, 2019, pp. 895–902, doi:10.1007/s00723-019-01115-x.
short: S. Hadjiali, R. Savka, M. Plaumann, U. Bommerich, S. Bothe, T. Gutmann, T.
Ratajczyk, J. Bernarding, H.H. Limbach, H. Plenio, G. Buntkowsky, Applied Magnetic
Resonance 50 (2019) 895–902.
date_created: 2026-02-07T15:40:18Z
date_updated: 2026-02-17T16:17:34Z
doi: 10.1007/s00723-019-01115-x
extern: '1'
intvolume: ' 50'
issue: '7'
keyword:
- dynamic nuclear-polarization
- hyperpolarization
- enhancement
- hydrogen induced polarization
- olefin-metathesis catalysts
- parahydrogen-induced polarization
- peptides
- Physics
- sabre
- spectroscopy
language:
- iso: eng
page: 895–902
publication: Applied Magnetic Resonance
publication_identifier:
issn:
- 1613-7507
status: public
title: Substituent Influences on the NMR Signal Amplification of Ir Complexes with
Heterocyclic Carbene Ligands
type: journal_article
user_id: '100715'
volume: 50
year: '2019'
...
---
_id: '63960'
abstract:
- lang: eng
text: Recent advances in solid-state nuclear magnetic resonance (NMR) spectroscopy
and dynamic nuclear polarization (DNP) of nanostructured materials are reviewed.
A first group of materials is based on crystalline nanocellulose (CNC) or microcrystalline
cellulose (MCC), which are used as carrier materials for dye molecules, catalysts
or in combination with heterocyclic molecules as ion conducting membranes. These
materials have widespread applications in sensorics, optics, catalysis or fuel
cell research. A second group are metal oxides such as V-Mo-W oxides, which are
of enormous importance in the manufacturing process of basic chemicals. The third
group are catalytically active nanocrystalline metal nanoparticles, coated with
protectants or embedded in polymers. The last group includes of lead-free perovskite
materials, which are employed as environmentally benign substitution materials
for conventional lead-based electronics materials. These materials are discussed
in terms of their application and physico-chemical characterization by solid-state
NMR techniques, combined with gas-phase NMR and quantum-chemical modelling on
the density functional theory (DFT) level. The application of multinuclear 1H,
2H, 13C, 15N and 23Na solid state NMR techniques under static or MAS conditions
for the characterization of these materials, their surfaces and processes on their
surfaces is discussed. Moreover, the analytic power of the combination of these
techniques with DNP for the identification of low-concentrated carbon and nitrogen
containing surface species in natural abundance is reviewed. Finally, approaches
for sensitivity enhancement by DNP of quadrupolar nuclei such as 17O and 51V are
presented that enable the identification of catalytic sites in metal oxide catalysts.
author:
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Pedro B.
full_name: Groszewicz, Pedro B.
last_name: Groszewicz
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Gutmann T, Groszewicz PB, Buntkowsky G. Solid-state NMR of nanocrystals. Annual
Reports on NMR Spectroscopy. 2019;97:1–82. doi:10.1016/bs.arnmr.2018.12.001
apa: Gutmann, T., Groszewicz, P. B., & Buntkowsky, G. (2019). Solid-state NMR
of nanocrystals. Annual Reports on NMR Spectroscopy, 97, 1–82. https://doi.org/10.1016/bs.arnmr.2018.12.001
bibtex: '@article{Gutmann_Groszewicz_Buntkowsky_2019, title={Solid-state NMR of
nanocrystals}, volume={97}, DOI={10.1016/bs.arnmr.2018.12.001},
journal={Annual Reports on NMR Spectroscopy}, author={Gutmann, Torsten and Groszewicz,
Pedro B. and Buntkowsky, Gerd}, year={2019}, pages={1–82} }'
chicago: 'Gutmann, Torsten, Pedro B. Groszewicz, and Gerd Buntkowsky. “Solid-State
NMR of Nanocrystals.” Annual Reports on NMR Spectroscopy 97 (2019): 1–82.
https://doi.org/10.1016/bs.arnmr.2018.12.001.'
ieee: 'T. Gutmann, P. B. Groszewicz, and G. Buntkowsky, “Solid-state NMR of nanocrystals,”
Annual Reports on NMR Spectroscopy, vol. 97, pp. 1–82, 2019, doi: 10.1016/bs.arnmr.2018.12.001.'
mla: Gutmann, Torsten, et al. “Solid-State NMR of Nanocrystals.” Annual Reports
on NMR Spectroscopy, vol. 97, 2019, pp. 1–82, doi:10.1016/bs.arnmr.2018.12.001.
short: T. Gutmann, P.B. Groszewicz, G. Buntkowsky, Annual Reports on NMR Spectroscopy
97 (2019) 1–82.
date_created: 2026-02-07T15:37:03Z
date_updated: 2026-02-17T16:17:56Z
doi: 10.1016/bs.arnmr.2018.12.001
extern: '1'
intvolume: ' 97'
keyword:
- solid-state nmr
- heterogeneous catalysis
- dynamic nuclear polarization
- Ferroelectrics
- Nanocatalysis
- Surface reactions
language:
- iso: eng
page: 1–82
publication: Annual Reports on NMR Spectroscopy
status: public
title: Solid-state NMR of nanocrystals
type: journal_article
user_id: '100715'
volume: 97
year: '2019'
...
---
_id: '63930'
abstract:
- lang: eng
text: Abstract Specific spin labeling allows the site-selective investigation of
biomolecules by EPR and DNP enhanced NMR spectroscopy. A novel spin labeling strategy
for commercially available Fmoc-amino acids is developed. In this approach, the
PROXYL spin label is covalently attached to the hydroxyl side chain of three amino
acids hydroxyproline (Hyp), serine (Ser) and tyrosine (Tyr) by a simple three-step
synthesis route. The obtained PROXYL containing building-blocks are N-terminally
protected by the Fmoc-protection group, which makes them applicable for the use
in solid-phase peptide synthesis (SPPS). This approach allows the insertion of
the spin label at any desired position during SPPS, which makes it more versatile
than the widely used post synthetic spin labeling strategies. For the final building-blocks,
the radical activity is proven by EPR. DNP enhanced solid-state NMR experiments
employing these building-blocks in a TCE solution show enhancement factors of
up to 26 for 1H and 13C (1H→13C cross-polarization). To proof the viability of
the presented building-blocks for insertion of the spin label during SPPS the
penta-peptide Acetyl-Gly-Ser(PROXYL)-Gly-Gly-Gly was synthesized employing the
spin labeled Ser building-block. This peptide could successfully be isolated and
the spin label activity proved by EPR and DNP NMR measurements, showing enhancement
factors of 12.1±0.1 for 1H and 13.9±0.5 for 13C (direct polarization).
author:
- first_name: Martin
full_name: Brodrecht, Martin
last_name: Brodrecht
- first_name: Kevin
full_name: Herr, Kevin
last_name: Herr
- first_name: Sarah
full_name: Bothe, Sarah
last_name: Bothe
- first_name: Marcos
full_name: de Oliveira Jr., Marcos
last_name: de Oliveira Jr.
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Brodrecht M, Herr K, Bothe S, de Oliveira Jr. M, Gutmann T, Buntkowsky G. Efficient
Building Blocks for Solid-Phase Peptide Synthesis of Spin Labeled Peptides for
Electron Paramagnetic Resonance and Dynamic Nuclear Polarization Applications.
ChemPhysChem. 2019;20(11):1475–1487. doi:10.1002/cphc.201900211
apa: Brodrecht, M., Herr, K., Bothe, S., de Oliveira Jr., M., Gutmann, T., &
Buntkowsky, G. (2019). Efficient Building Blocks for Solid-Phase Peptide Synthesis
of Spin Labeled Peptides for Electron Paramagnetic Resonance and Dynamic Nuclear
Polarization Applications. ChemPhysChem, 20(11), 1475–1487. https://doi.org/10.1002/cphc.201900211
bibtex: '@article{Brodrecht_Herr_Bothe_de Oliveira Jr._Gutmann_Buntkowsky_2019,
title={Efficient Building Blocks for Solid-Phase Peptide Synthesis of Spin Labeled
Peptides for Electron Paramagnetic Resonance and Dynamic Nuclear Polarization
Applications}, volume={20}, DOI={10.1002/cphc.201900211},
number={11}, journal={ChemPhysChem}, author={Brodrecht, Martin and Herr, Kevin
and Bothe, Sarah and de Oliveira Jr., Marcos and Gutmann, Torsten and Buntkowsky,
Gerd}, year={2019}, pages={1475–1487} }'
chicago: 'Brodrecht, Martin, Kevin Herr, Sarah Bothe, Marcos de Oliveira Jr., Torsten
Gutmann, and Gerd Buntkowsky. “Efficient Building Blocks for Solid-Phase Peptide
Synthesis of Spin Labeled Peptides for Electron Paramagnetic Resonance and Dynamic
Nuclear Polarization Applications.” ChemPhysChem 20, no. 11 (2019): 1475–1487.
https://doi.org/10.1002/cphc.201900211.'
ieee: 'M. Brodrecht, K. Herr, S. Bothe, M. de Oliveira Jr., T. Gutmann, and G. Buntkowsky,
“Efficient Building Blocks for Solid-Phase Peptide Synthesis of Spin Labeled Peptides
for Electron Paramagnetic Resonance and Dynamic Nuclear Polarization Applications,”
ChemPhysChem, vol. 20, no. 11, pp. 1475–1487, 2019, doi: 10.1002/cphc.201900211.'
mla: Brodrecht, Martin, et al. “Efficient Building Blocks for Solid-Phase Peptide
Synthesis of Spin Labeled Peptides for Electron Paramagnetic Resonance and Dynamic
Nuclear Polarization Applications.” ChemPhysChem, vol. 20, no. 11, 2019,
pp. 1475–1487, doi:10.1002/cphc.201900211.
short: M. Brodrecht, K. Herr, S. Bothe, M. de Oliveira Jr., T. Gutmann, G. Buntkowsky,
ChemPhysChem 20 (2019) 1475–1487.
date_created: 2026-02-07T09:01:25Z
date_updated: 2026-02-17T16:19:05Z
doi: 10.1002/cphc.201900211
extern: '1'
intvolume: ' 20'
issue: '11'
language:
- iso: eng
page: 1475–1487
publication: ChemPhysChem
status: public
title: Efficient Building Blocks for Solid-Phase Peptide Synthesis of Spin Labeled
Peptides for Electron Paramagnetic Resonance and Dynamic Nuclear Polarization Applications
type: journal_article
user_id: '100715'
volume: 20
year: '2019'
...
---
_id: '63931'
abstract:
- lang: eng
text: Abstract The structure and surface functionalization of biologically relevant
silica-based hybrid materials was investigated by 2D solid-state NMR techniques
combined with dynamic nuclear polarization (DNP). This approach was applied to
a model system of mesoporous silica, which was modified through in-pore grafting
of small peptides by solid-phase peptide synthesis (SPPS). To prove the covalent
binding of the peptides on the surface, DNP-enhanced solid-state NMR was used
for the detection of 15N NMR signals in natural abundance. DNP-enhanced heterocorrelation
experiments with frequency switched Lee–Goldburg homonuclear proton decoupling
(1H–13C and 1H–15N CP MAS FSLG HETCOR) were performed to verify the primary structure
and configuration of the synthesized peptides. 1H FSLG spectra and 1H-29Si FSLG
HETCOR correlation spectra were recorded to investigate the orientation of the
amino acid residues with respect to the silica surface. The combination of these
NMR techniques provides detailed insights into the structure of amino acid functionalized
hybrid compounds and allows for the understanding for each synthesis step during
the in-pore SPPS.
author:
- first_name: Martin
full_name: Brodrecht, Martin
last_name: Brodrecht
- first_name: Bharti
full_name: Kumari, Bharti
last_name: Kumari
- first_name: A. S. Sofia Lilly
full_name: Thankamony, A. S. Sofia Lilly
last_name: Thankamony
- first_name: Hergen
full_name: Breitzke, Hergen
last_name: Breitzke
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
citation:
ama: Brodrecht M, Kumari B, Thankamony ASSL, Breitzke H, Gutmann T, Buntkowsky G.
Structural Insights into Peptides Bound to the Surface of Silica Nanopores. Chemistry
A European Journal. 2019;25(20):5214–5221. doi:10.1002/chem.201805480
apa: Brodrecht, M., Kumari, B., Thankamony, A. S. S. L., Breitzke, H., Gutmann,
T., & Buntkowsky, G. (2019). Structural Insights into Peptides Bound to the
Surface of Silica Nanopores. Chemistry A European Journal, 25(20),
5214–5221. https://doi.org/10.1002/chem.201805480
bibtex: '@article{Brodrecht_Kumari_Thankamony_Breitzke_Gutmann_Buntkowsky_2019,
title={Structural Insights into Peptides Bound to the Surface of Silica Nanopores},
volume={25}, DOI={10.1002/chem.201805480},
number={20}, journal={Chemistry A European Journal}, author={Brodrecht, Martin
and Kumari, Bharti and Thankamony, A. S. Sofia Lilly and Breitzke, Hergen and
Gutmann, Torsten and Buntkowsky, Gerd}, year={2019}, pages={5214–5221} }'
chicago: 'Brodrecht, Martin, Bharti Kumari, A. S. Sofia Lilly Thankamony, Hergen
Breitzke, Torsten Gutmann, and Gerd Buntkowsky. “Structural Insights into Peptides
Bound to the Surface of Silica Nanopores.” Chemistry A European Journal
25, no. 20 (2019): 5214–5221. https://doi.org/10.1002/chem.201805480.'
ieee: 'M. Brodrecht, B. Kumari, A. S. S. L. Thankamony, H. Breitzke, T. Gutmann,
and G. Buntkowsky, “Structural Insights into Peptides Bound to the Surface of
Silica Nanopores,” Chemistry A European Journal, vol. 25, no. 20, pp. 5214–5221,
2019, doi: 10.1002/chem.201805480.'
mla: Brodrecht, Martin, et al. “Structural Insights into Peptides Bound to the Surface
of Silica Nanopores.” Chemistry A European Journal, vol. 25, no. 20, 2019,
pp. 5214–5221, doi:10.1002/chem.201805480.
short: M. Brodrecht, B. Kumari, A.S.S.L. Thankamony, H. Breitzke, T. Gutmann, G.
Buntkowsky, Chemistry A European Journal 25 (2019) 5214–5221.
date_created: 2026-02-07T09:01:45Z
date_updated: 2026-02-17T16:19:01Z
doi: 10.1002/chem.201805480
extern: '1'
intvolume: ' 25'
issue: '20'
language:
- iso: eng
page: 5214–5221
publication: Chemistry A European Journal
status: public
title: Structural Insights into Peptides Bound to the Surface of Silica Nanopores
type: journal_article
user_id: '100715'
volume: 25
year: '2019'
...
---
_id: '64054'
abstract:
- lang: eng
text: In this work, the preparation of porous hybrid particle-based films by core-shell
particle design and convenient film preparation is reported. Monodisperse core
particles consisting of poly(methyl methacrylate‑co‑allyl methacrylate) (P(MMA‑co‑ALMA))
were synthesized by starved-feed emulsion polymerization followed by the introduction
of an initiator-containing monomer (inimer) for subsequent atom transfer radical
polymerization (ATRP). The inimer shell allowed for the introduction of allylhydrido
polycarbosilane (SMP-10) under ATRP conditions by grafting to the core particles.
The functionalization of the prepared core-shell particles was investigated by
IR spectroscopy (FTIR), scanning transmission electron microscopy (STEM) and solid-state
NMR combined with dynamic nuclear polarization (DNP). The obtained hard core/soft
preceramic shell particles were subjected to the melt-shear organization technique,
enabling a convenient alignment into a colloidal crystal structure in one single
step without the presence of a dispersion medium or solvent for the designed particles.
Moreover, the hybrid particle-based films were converted into a porous ceramic
structure upon thermal treatment. As a result, freestanding ceramic porous films
have been obtained after degradation of the organic template core particles. Noteworthy,
the conversion of the matrix material consisting of SMP-10 into the ceramic occurred
with preservation of the pristine colloidal crystal template structure. Herein,
the first example of core-shell particle preparation by combining different polymerization
methodologies and application of the convenient melt-shear organization technique
is shown, paving a new way to ceramic materials with tailored morphology and porosity.
author:
- first_name: Steffen
full_name: Vowinkel, Steffen
last_name: Vowinkel
- first_name: Anna
full_name: Boehm, Anna
last_name: Boehm
- first_name: Timmy
full_name: Schäfer, Timmy
last_name: Schäfer
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Emanuel
full_name: Ionescu, Emanuel
last_name: Ionescu
- first_name: Markus
full_name: Gallei, Markus
last_name: Gallei
citation:
ama: Vowinkel S, Boehm A, Schäfer T, Gutmann T, Ionescu E, Gallei M. Preceramic
core-shell particles for the preparation of hybrid colloidal crystal films by
melt-shear organization and conversion into porous ceramics. Materials &
Design. 2018;160:926–935. doi:10.1016/j.matdes.2018.10.032
apa: Vowinkel, S., Boehm, A., Schäfer, T., Gutmann, T., Ionescu, E., & Gallei,
M. (2018). Preceramic core-shell particles for the preparation of hybrid colloidal
crystal films by melt-shear organization and conversion into porous ceramics.
Materials & Design, 160, 926–935. https://doi.org/10.1016/j.matdes.2018.10.032
bibtex: '@article{Vowinkel_Boehm_Schäfer_Gutmann_Ionescu_Gallei_2018, title={Preceramic
core-shell particles for the preparation of hybrid colloidal crystal films by
melt-shear organization and conversion into porous ceramics}, volume={160}, DOI={10.1016/j.matdes.2018.10.032},
journal={Materials & Design}, author={Vowinkel, Steffen and Boehm, Anna and
Schäfer, Timmy and Gutmann, Torsten and Ionescu, Emanuel and Gallei, Markus},
year={2018}, pages={926–935} }'
chicago: 'Vowinkel, Steffen, Anna Boehm, Timmy Schäfer, Torsten Gutmann, Emanuel
Ionescu, and Markus Gallei. “Preceramic Core-Shell Particles for the Preparation
of Hybrid Colloidal Crystal Films by Melt-Shear Organization and Conversion into
Porous Ceramics.” Materials & Design 160 (2018): 926–935. https://doi.org/10.1016/j.matdes.2018.10.032.'
ieee: 'S. Vowinkel, A. Boehm, T. Schäfer, T. Gutmann, E. Ionescu, and M. Gallei,
“Preceramic core-shell particles for the preparation of hybrid colloidal crystal
films by melt-shear organization and conversion into porous ceramics,” Materials
& Design, vol. 160, pp. 926–935, 2018, doi: 10.1016/j.matdes.2018.10.032.'
mla: Vowinkel, Steffen, et al. “Preceramic Core-Shell Particles for the Preparation
of Hybrid Colloidal Crystal Films by Melt-Shear Organization and Conversion into
Porous Ceramics.” Materials & Design, vol. 160, 2018, pp. 926–935,
doi:10.1016/j.matdes.2018.10.032.
short: S. Vowinkel, A. Boehm, T. Schäfer, T. Gutmann, E. Ionescu, M. Gallei, Materials
& Design 160 (2018) 926–935.
date_created: 2026-02-07T16:15:42Z
date_updated: 2026-02-17T16:12:52Z
doi: 10.1016/j.matdes.2018.10.032
extern: '1'
intvolume: ' 160'
keyword:
- emulsion polymerization
- self-assembly
- ATRP
- Colloidal crystal
- Hybrid film
- Particle processing
language:
- iso: eng
page: 926–935
publication: Materials & Design
status: public
title: Preceramic core-shell particles for the preparation of hybrid colloidal crystal
films by melt-shear organization and conversion into porous ceramics
type: journal_article
user_id: '100715'
volume: 160
year: '2018'
...