@article{62095,
  author       = {{Tönjes, Jan and Kell, Lukas and Werner, Thomas}},
  issn         = {{1523-7060}},
  journal      = {{Organic Letters}},
  keywords     = {{T2, CSSD}},
  number       = {{51}},
  pages        = {{9114--9118}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Organocatalytic Stereospecific Appel Reaction}}},
  doi          = {{10.1021/acs.orglett.3c03463}},
  volume       = {{25}},
  year         = {{2023}},
}

@article{45562,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Based on a literature review of studies on teachers’ professional competence and related assessment tools, this paper introduces a model of teacher education assessment. It is influenced by Miller’s (1990) framework of assessment in medical education and includes, among other aspects, performance assessments. This model is used to understand the potential effects of transferring assessment tools into a digital format with assessment feedback. Five examples for such a transfer will be discussed: three methods for various aspects of communication, a test for pedagogical content knowledge, and a test for content knowledge. All five are established instruments well-described in terms of validity. All five have recently been transferred into a digital format. The analysis of this transfer also reveals a potentially harmful effect of digital assessment. The closer an assessment instrument is to assessing action-related parts of professional competence, the more authenticity is required; however, digitisation tends to decrease this authenticity. This suggests that an increasing number of digital assessment tools in teacher education might result in an even more dominant focus on knowledge tests, ignoring other parts of professional competence. This article highlights the role of authenticity in validity and discusses the most suitable assessment format to address various parts of professional competence. It ends by highlighting the lessons learned from the transfer of assessment instruments into a digital format that other academic disciplines might find interesting.</jats:p>}},
  author       = {{Kulgemeyer, Christoph and Riese, Josef and Vogelsang, Christoph and Buschhüter, David and Borowski, Andreas and Weißbach, Anna and Jordans, Melanie and Reinhold, Peter and Schecker, Horst}},
  issn         = {{1434-663X}},
  journal      = {{Zeitschrift für Erziehungswissenschaft}},
  keywords     = {{Education}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{How authenticity impacts validity: Developing a model of teacher education assessment and exploring the effects of the digitisation of assessment methods Über Validität und Authentizität: Effekte des Transfers von Testinstrumenten in ein digitales Format auf die erhobenen Aspekte der professionellen Handlungskompetenz}}},
  doi          = {{10.1007/s11618-023-01154-y}},
  year         = {{2023}},
}

@article{62810,
  abstract     = {{Cobalt iron containing layered double hydroxides (LDHs) and spinels are promising catalysts for the electrochemical oxygen evolution reaction (OER). Towards development of better performing catalysts, the precise tuning of mesostructural features such as pore size is desirable, but often hard to achieve. Herein, a computer‐controlled microemulsion‐assisted co‐precipitation (MACP) method at constant pH is established and compared to conventional co‐precipitation. With MACP, the particle growth is limited and through variation of the constant pH during synthesis the pore size of the as‐prepared catalysts is controlled, generating materials for the systematic investigation of confinement effects during OER. At a threshold pore size, overpotential increased significantly. Electrochemical impedance spectroscopy (EIS) indicated a change in OER mechanism, involving the oxygen release step. It is assumed that in smaller pores the critical radius for gas bubble formation is not met and therefore a smaller charge‐transfer resistance is observed for medium frequencies.}},
  author       = {{Rabe, Anna and Jaugstetter, Maximilian and Hiege, Felix and Cosanne, Nicolas and Ortega, Klaus Friedel and Linnemann, Julia and Tschulik, Kristina and Behrens, Malte}},
  issn         = {{1864-5631}},
  journal      = {{ChemSusChem}},
  keywords     = {{electrocatalysis, oxygen evolution reaction, cobalt spinel, cobalt hydroxide, LDH}},
  number       = {{10}},
  publisher    = {{Wiley}},
  title        = {{{Tailoring Pore Size and Catalytic Activity in Cobalt Iron Layered Double Hydroxides and Spinels by Microemulsion‐Assisted pH‐Controlled Co‐Precipitation}}},
  doi          = {{10.1002/cssc.202202015}},
  volume       = {{16}},
  year         = {{2023}},
}

@article{62827,
  author       = {{Mahnel, Sabrina and Bannert, Franz and Zimmermann, Johannes and Grunder, Sergio and Demmig, Martin and Lomolino, Silvia and Grundmeier, Guido}},
  issn         = {{0143-7496}},
  journal      = {{International Journal of Adhesion and Adhesives}},
  publisher    = {{Elsevier BV}},
  title        = {{{Open time studies of cold curing polyurethane adhesives using a standardized spatula test setup suitable for near-production conditions}}},
  doi          = {{10.1016/j.ijadhadh.2023.103560}},
  volume       = {{129}},
  year         = {{2023}},
}

@phdthesis{62825,
  author       = {{Pollmeier, Pascal}},
  title        = {{{Umgang mit Evidenzen angehender Lehrkräfte in den Naturwissenschaften: Epistemologie in der Lehrkräfteausbildung}}},
  year         = {{2023}},
}

@article{62854,
  abstract     = {{Highly selective rare-earth separation has become increasingly important due to the indispensable role of these elements in various cutting-edge technologies including clean energy. However, the similar physicochemical properties of rare-earth elements (REEs) render their separation very challenging, and the development of new selective receptors for these elements is potentially of very considerable economic and environmental importance. Herein, we report the development of a series of 4-phosphoryl pyrazolone receptors for the selective separation of trivalent lanthanum, europium, and ytterbium as the representatives of light, middle, and heavy REEs, respectively. X-ray crystallography studies were employed to obtain solid-state structures across 11 of the resulting complexes, allowing comparative structure–function relationships to be probed, including the effect of lanthanide contraction that occurs along the series from lanthanum to europium to ytterbium and which potentially provides a basis for REE ion separation. In addition, the influence of ligand structure and lipophilicity on lanthanide binding and selectivity was systematically investigated via n-octanol/water distribution and liquid–liquid extraction (LLE) studies. Corresponding stoichiometry relationships between solid and solution states were well established using slope analyses. The results provide new insights into some fundamental lanthanide coordination chemistry from a separation perspective and establish 4-phosphoryl pyrazolone derivatives as potential practical extraction reagents for the selective separation of REEs in the future.}},
  author       = {{Zhang, Jianfeng and Wenzel, Marco and Schnaars, Kathleen and Hennersdorf, Felix and Lindoy, Leonard F. and Weigand, Jan J.}},
  issn         = {{0020-1669}},
  journal      = {{Inorganic Chemistry}},
  number       = {{7}},
  pages        = {{3212--3228}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Highly Tunable 4-Phosphoryl Pyrazolone Receptors for Selective Rare-Earth Separation}}},
  doi          = {{10.1021/acs.inorgchem.2c04221}},
  volume       = {{62}},
  year         = {{2023}},
}

@article{38541,
  author       = {{Barkhofen, Sonja and Brecht, Benjamin and Silberhorn, Christine}},
  journal      = {{Physik in unserer Zeit}},
  number       = {{1}},
  pages        = {{10--11}},
  publisher    = {{Wiley}},
  title        = {{{Verschränkung wie am Fließband}}},
  doi          = {{https://doi.org/10.1002/piuz.202370107}},
  volume       = {{54}},
  year         = {{2023}},
}

@article{40274,
  author       = {{Zhai, Xiaokun and Ma, Xuekai and Gao, Ying and Xing, Chunzi and Gao, Meini and Dai, Haitao and Wang, Xiao and Pan, Anlian and Schumacher, Stefan and Gao, Tingge}},
  journal      = {{Physical Review Letters}},
  number       = {{13}},
  pages        = {{136901}},
  title        = {{{Electrically controlling vortices in a neutral exciton polariton condensate at room temperature}}},
  doi          = {{10.1103/PhysRevLett.131.136901}},
  volume       = {{131}},
  year         = {{2023}},
}

@article{36416,
  author       = {{De, Jianbo and Ma, Xuekai and Yin, Fan and Ren, Jiahuan and Yao, Jiannian and Schumacher, Stefan and Liao, Qing and Fu, Hongbing and Malpuech, Guillaume and Solnyshkov, Dmitry}},
  issn         = {{0002-7863}},
  journal      = {{Journal of the American Chemical Society (JACS)}},
  keywords     = {{Colloid and Surface Chemistry, Biochemistry, General Chemistry, Catalysis}},
  number       = {{3}},
  pages        = {{1557--1563}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Room-Temperature Electrical Field-Enhanced Ultrafast Switch in Organic Microcavity Polariton Condensates}}},
  doi          = {{10.1021/jacs.2c07557}},
  volume       = {{145}},
  year         = {{2023}},
}

@article{35077,
  author       = {{Liang, Qian and Ma, Xuekai and Long, Teng and Yao, Jiannian and Liao, Qing and Fu, Hongbing}},
  issn         = {{1433-7851}},
  journal      = {{Angewandte Chemie International Edition}},
  keywords     = {{General Chemistry, Catalysis}},
  number       = {{9}},
  publisher    = {{Wiley}},
  title        = {{{Circularly Polarized Lasing from a Microcavity Filled with Achiral Single‐Crystalline Microribbons}}},
  doi          = {{10.1002/anie.202213229}},
  volume       = {{62}},
  year         = {{2023}},
}

@article{62944,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Monitoring early stages of polymeric deposit formation and its prevention were studied by in‐situ electrochemical impedance spectroscopy (EIS) in a continuously operating reactor employed for polymer production. An EIS flow cell was designed and employed during the emulsion polymerization of vinyl acetate. The electrochemical analysis of the complex impedance at the solution/reactor interface allows the time‐resolved detection of film formation processes. In comparison to oxide‐covered stainless steel, an anti‐adhesive sol‐gel coated alloy showed a significant inhibition of poly(vinyl acetate) fouling. The EIS‐based approach proved to be a valuable tool for monitoring both thin barrier film performance and fouling processes under harsh process conditions.</jats:p>}},
  author       = {{Neßlinger, Vanessa and Rust, Sören and Atlanov, Jan and Pauer, Werner and Grundmeier, Guido}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  number       = {{3}},
  pages        = {{291--299}},
  publisher    = {{Wiley}},
  title        = {{{Monitoring Polymeric Fouling in a Continuous Reactor by Electrochemical Impedance Spectroscopy}}},
  doi          = {{10.1002/cite.202300032}},
  volume       = {{96}},
  year         = {{2023}},
}

@inproceedings{62968,
  author       = {{Pollmeier, Pascal and Vogelsang, Christoph and Rogge, Tim}},
  keywords     = {{Emotionen, Video, Eigenvideografie, Studierende, Lehramt, Praxissemester, Unterricht}},
  location     = {{Essen}},
  title        = {{{Zwischen Angst und Vorfreude – Emotionales Erleben Lehramtsstudierender bei der Arbeit mit Eigenvideografien}}},
  year         = {{2023}},
}

@inproceedings{62963,
  author       = {{Pollmeier, Pascal and Fechner, Sabine}},
  booktitle    = {{15th Conference of The European Science Education Research Association (ESERA)}},
  keywords     = {{Daten, anomale Daten, Auswertung, Umgang mit Daten, Experiment}},
  location     = {{Cappadocia}},
  title        = {{{Depicting the confrontation with anomalous data in Models of Data}}},
  year         = {{2023}},
}

@inproceedings{62955,
  author       = {{Fechner, Sabine and Stroop, Dietlinde and Ponath, Jonas and Pollmeier, Pascal}},
  booktitle    = {{Herbsttagung des Deutscher Verein zur Förderung des mathematischen und naturwissenschaftlichen Unterrichts (MNU) }},
  keywords     = {{Digital, Digitalisierung, Messsensoren, Lehrkräfte, Chemie, Nachhaltigkeit, Bildung für nachhaltige Entwicklung, BNE}},
  location     = {{Dortmund}},
  title        = {{{Digitale Messwerterfassung im Chemieunterricht – Einblicke in die Entwicklung von Lernumgebungen und digitale Netzwerke}}},
  year         = {{2023}},
}

@article{36471,
  abstract     = {{<jats:p>Superconducting nanowire single-photon detectors (SNSPDs) show near unity efficiency, low dark count rate, and short recovery time. Combining these characteristics with temporal control of SNSPDs broadens their applications as in active de-latching for higher dynamic range counting or temporal filtering for pump-probe spectroscopy or LiDAR. To that end, we demonstrate active gating of an SNSPD with a minimum off-to-on rise time of 2.4 ns and a total gate length of 5.0 ns. We show how the rise time depends on the inductance of the detector in combination with the control electronics. The gate window is demonstrated to be fully and freely, electrically tunable up to 500 ns at a repetition rate of 1.0 MHz, as well as ungated, free-running operation. Control electronics to generate the gating are mounted on the 2.3 K stage of a closed-cycle sorption cryostat, while the detector is operated on the cold stage at 0.8 K. We show that the efficiency and timing jitter of the detector is not altered during the on-time of the gating window. We exploit gated operation to demonstrate a method to increase in the photon counting dynamic range by a factor 11.2, as well as temporal filtering of a strong pump in an emulated pump-probe experiment.</jats:p>}},
  author       = {{Hummel, Thomas and Widhalm, Alex and Höpker, Jan Philipp and Jöns, Klaus and Chang, Jin and Fognini, Andreas and Steinhauer, Stephan and Zwiller, Val and Zrenner, Artur and Bartley, Tim}},
  issn         = {{1094-4087}},
  journal      = {{Optics Express}},
  keywords     = {{Atomic and Molecular Physics, and Optics}},
  number       = {{1}},
  publisher    = {{Optica Publishing Group}},
  title        = {{{Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry}}},
  doi          = {{10.1364/oe.472058}},
  volume       = {{31}},
  year         = {{2023}},
}

@article{37613,
  abstract     = {{<jats:p>Chemical phenomena are only observable on a macroscopic level, whereas they are explained by entities on a non-visible level. Students often demonstrate limited ability to link these different levels. Augmented reality (AR) offers the possibility to increase contiguity by embedding virtual models into hands-on experiments. Therefore, this paper presents a pre- and post-test study investigating how learning and cognitive load are influenced by AR during hands-on experiments. Three comparison groups (AR, animation and filmstrip), with a total of N = 104 German secondary school students, conducted and explained two hands-on experiments. Whereas the AR group was allowed to use an AR app showing virtual models of the processes on the submicroscopic level during the experiments, the two other groups were provided with the same dynamic or static models after experimenting. Results indicate no significant learning gain for the AR group in contrast to the two other groups. The perceived intrinsic cognitive load was higher for the AR group in both experiments as well as the extraneous load in the second experiment. It can be concluded that AR could not unleash its theoretically derived potential in the present study.</jats:p>}},
  author       = {{Peeters, Hendrik and Habig, Sebastian and Fechner, Sabine}},
  issn         = {{2414-4088}},
  journal      = {{Multimodal Technologies and Interaction}},
  keywords     = {{augmented reality, chemistry education, models, experiment, cognitive load}},
  number       = {{2}},
  publisher    = {{MDPI AG}},
  title        = {{{Does augmented reality help to understand chemical phenomena during hands-on experiments?–Implications for cognitive load and learning}}},
  doi          = {{10.3390/mti7020009}},
  volume       = {{7}},
  year         = {{2023}},
}

@article{63043,
  abstract     = {{Spatial modes of light have become highly attractive to increase the dimension and, thereby, security and information capacity in quantum key distribution (QKD). So far, only transverse electric field components have been considered, while longitudinal polarization components have remained neglected. Here, we present an approach to include all three spatial dimensions of electric field oscillation in QKD by implementing our tunable, on-a-chip vector beam decoder (VBD). This inversely designed device pioneers the "preparation" and "measurement" of three-dimensionally polarized mutually unbiased basis states for high-dimensional (HD) QKD and paves the way for the integration of HD QKD with spatial modes in multifunctional on-a-chip photonics platforms.}},
  title        = {{{Tunable vector beam decoder by inverse design for high-dimensional quantum key distribution with 3D polarized spatial modes}}},
  doi          = {{10.48550/ARXIV.2304.12296}},
  year         = {{2023}},
}

@inproceedings{63010,
  author       = {{Wedekind, Lisa and Pollmeier, Pascal and Fechner, Sabine}},
  booktitle    = {{15th Conference of the European Science Education Research Association (ESERA 2023)}},
  location     = {{Cappadocia, Türkiye}},
  title        = {{{Making use of analogical transfer in context-based learning}}},
  year         = {{2023}},
}

@inproceedings{62969,
  author       = {{Pollmeier, Pascal and Vogelsang, Christoph and Fechner, Sabine}},
  booktitle    = {{15th Conference of the European Science Education Research Association (ESERA)}},
  keywords     = {{Epistemologie, Evidenzen, Daten, Umgang mit Daten, Kompetenzen, Studierende, pre-service teachers}},
  location     = {{Cappadocia}},
  title        = {{{Evidence based practice of pre-service teachers}}},
  year         = {{2023}},
}

@article{46468,
  author       = {{Lange, Nina Amelie and Schapeler, Timon and Höpker, Jan Philipp and Protte, Maximilian and Bartley, Tim}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{2}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Degenerate photons from a cryogenic spontaneous parametric down-conversion source}}},
  doi          = {{10.1103/physreva.108.023701}},
  volume       = {{108}},
  year         = {{2023}},
}