@article{62094,
  author       = {{Yemback, Pierre and Eyong, Kenneth O. and Efange, Noella M. and Kamdem, Michael HK. and Ndinteh, Derek T. and Odumosu, Patricia O. and Folefoc, Gabriel N. and Ayong, Lawrence and Werner, Thomas}},
  issn         = {{1874-3900}},
  journal      = {{Phytochemistry Letters}},
  keywords     = {{T4}},
  pages        = {{26--35}},
  publisher    = {{Elsevier BV}},
  title        = {{{Lupane derivatives: Design, isolation, synthesis and evaluation of antiplasmodial activity against Plasmodium falciparum 3D7 strain}}},
  doi          = {{10.1016/j.phytol.2023.06.009}},
  volume       = {{57}},
  year         = {{2023}},
}

@article{62096,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>The biocatalytic kinetic resolution of cyclic carbonates derived from glycerol is reported. A selection of 26 esterases and lipases was tested for the asymmetric hydrolysis of the model substrate (epichlorohydrin carbonate) in aqueous medium. Among them, Pig Liver Esterase and Novozym® 435 showed the best selectivity with <jats:italic>E</jats:italic>=38 and 49, respectively. Both enzymes were employed for the conversion of 12 glycerol derivatives under optimized conditions. The resolution of halogenated carbonates afforded the unconverted enantiomer in up to &gt;99 : 1 <jats:italic>er</jats:italic>. Furthermore, Novozym® 435 was successfully recycled 10 times without significant loss of activity. Upscaling and isolation of the chiral carbonate was also demonstrated. Subsequent conversion of this chiral building block allowed the direct one‐pot synthesis of (<jats:italic>S</jats:italic>)‐Guaifenesin, (<jats:italic>S</jats:italic>)‐Mephenesin and (<jats:italic>S</jats:italic>)‐Chlorphenesin in up to 89 % yield and 94 : 6 <jats:italic>er</jats:italic>.</jats:p>}},
  author       = {{Terazzi, Constanza and Spannenberg, Anke and von Langermann, Jan and Werner, Thomas}},
  issn         = {{1867-3880}},
  journal      = {{ChemCatChem}},
  keywords     = {{T1, T4, CSSD}},
  number       = {{19}},
  publisher    = {{Wiley}},
  title        = {{{Chemoenzymatic Synthesis of Chiral Building Blocks Based on the Kinetic Resolution of Glycerol‐Derived Cyclic Carbonates}}},
  doi          = {{10.1002/cctc.202300917}},
  volume       = {{15}},
  year         = {{2023}},
}

@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{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{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{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}},
}

@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{64893,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>The synthesis of three novel imidazolyl‐substituted sulfur‐containing heteroacenes is reported. These heteroacenes consisting of annelated benzo‐ and naphthothiophenes serve as precursors for the generation of open‐shell quinoid heteroacenes by oxidation with alkaline ferric cyanide. Spectroscopic and computational experiments support the formation of reactive open‐shell quinoids, which, however, quickly produce paramagnetic polymeric material.</jats:p>}},
  author       = {{Hou, Peng and Peschtrich, Sebastian and Feuerstein, Wolfram and Schoch, Roland and Hohloch, Stephan and Breher, Frank and Paradies, Jan}},
  issn         = {{2191-1363}},
  journal      = {{ChemistryOpen}},
  number       = {{11}},
  publisher    = {{Wiley}},
  title        = {{{Imidazolyl‐Substituted Benzo‐ and Naphthodithiophenes as Precursors for the Synthesis of Transient Open‐Shell Quinoids}}},
  doi          = {{10.1002/open.202300003}},
  volume       = {{12}},
  year         = {{2023}},
}

@article{30209,
  abstract     = {{<jats:p>DNA origami technology enables the folding of DNA strands into complex nanoscale shapes whose properties and interactions with molecular species often deviate significantly from that of genomic DNA. Here, we investigate the salting-out of different DNA origami shapes by the kosmotropic salt ammonium sulfate that is routinely employed in protein precipitation. We find that centrifugation in the presence of 3 M ammonium sulfate results in notable precipitation of DNA origami nanostructures but not of double-stranded genomic DNA. The precipitated DNA origami nanostructures can be resuspended in ammonium sulfate-free buffer without apparent formation of aggregates or loss of structural integrity. Even though quasi-1D six-helix bundle DNA origami are slightly less susceptible toward salting-out than more compact DNA origami triangles and 24-helix bundles, precipitation and recovery yields appear to be mostly independent of DNA origami shape and superstructure. Exploiting the specificity of ammonium sulfate salting-out for DNA origami nanostructures, we further apply this method to separate DNA origami triangles from genomic DNA fragments in a complex mixture. Our results thus demonstrate the possibility of concentrating and purifying DNA origami nanostructures by ammonium sulfate-induced salting-out.</jats:p>}},
  author       = {{Hanke, Marcel and Hansen, Niklas and Chen, Ruiping and Grundmeier, Guido and Fahmy, Karim and Keller, Adrian}},
  issn         = {{1422-0067}},
  journal      = {{International Journal of Molecular Sciences}},
  keywords     = {{Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Computer Science Applications, Spectroscopy, Molecular Biology, General Medicine, Catalysis}},
  number       = {{5}},
  pages        = {{2817}},
  publisher    = {{MDPI AG}},
  title        = {{{Salting-Out of DNA Origami Nanostructures by Ammonium Sulfate}}},
  doi          = {{10.3390/ijms23052817}},
  volume       = {{23}},
  year         = {{2022}},
}

@article{30910,
  author       = {{Ma, Lin and Pollard, Travis P. and Zhang, Yong and Schroeder, Marshall A. and Ren, Xiaoming and Han, Kee Sung and Ding, Michael S. and Cresce, Arthur V. and Atwater, Terrill B. and Mars, Julian and Cao, Longsheng and Steinrück, Hans-Georg and Mueller, Karl T. and Toney, Michael F. and Hourwitz, Matt and Fourkas, John T. and Maginn, Edward J. and Wang, Chunsheng and Borodin, Oleg and Xu, Kang}},
  issn         = {{2590-3322}},
  journal      = {{One Earth}},
  keywords     = {{Earth and Planetary Sciences (miscellaneous), General Environmental Science}},
  number       = {{4}},
  pages        = {{413--421}},
  publisher    = {{Elsevier BV}},
  title        = {{{Ammonium enables reversible aqueous Zn battery chemistries by tailoring the interphase}}},
  doi          = {{10.1016/j.oneear.2022.03.012}},
  volume       = {{5}},
  year         = {{2022}},
}

@article{30920,
  abstract     = {{<jats:title>Abstract</jats:title>
               <jats:p>Batteries capable of extreme fast-charging (XFC) are a necessity for the deployment of electric vehicles. Material properties of electrodes and electrolytes along with cell parameters such as stack pressure and temperature have coupled, synergistic, and sometimes deleterious effects on fast-charging performance. We develop a new experimental testbed that allows precise and conformal application of electrode stack pressure. We focus on cell capacity degradation using single-layer pouch cells with graphite anodes, LiNi0.5Mn0.3Co0.2O2 (NMC532) cathodes, and carbonate-based electrolyte. In the tested range (10 – 125 psi), cells cycled at higher pressure show higher capacity and less capacity fading. Additionally, Li plating decreases with increasing pressure as observed with scanning electron microscopy (SEM) and optical imaging. While the loss of Li inventory from Li plating is the largest contributor to capacity fade, electrochemical and SEM examination of the NMC cathodes after XFC experiments show increased secondary particle damage at lower pressure. We infer that the better performance at higher pressure is due to more homogenous reactions of active materials across the electrode and less polarization through the electrode thickness. Our study emphasizes the importance of electrode stack pressure in XFC batteries and highlights its subtle role in cell conditions.</jats:p>}},
  author       = {{Cao, Chuntian and Steinrück, Hans-Georg and Paul, Partha P and Dunlop, Alison R. and Trask, Stephen E. and Jansen, Andrew and Kasse, Robert M and Thampy, Vivek and Yusuf, Maha and Nelson Weker, Johanna and Shyam, Badri and Subbaraman, Ram and Davis, Kelly and Johnston, Christina M and Takacs, Christopher J and Toney, Michael}},
  issn         = {{0013-4651}},
  journal      = {{Journal of The Electrochemical Society}},
  keywords     = {{Materials Chemistry, Electrochemistry, Surfaces, Coatings and Films, Condensed Matter Physics, Renewable Energy, Sustainability and the Environment, Electronic, Optical and Magnetic Materials}},
  pages        = {{040540}},
  publisher    = {{The Electrochemical Society}},
  title        = {{{Conformal Pressure and Fast-Charging Li-Ion Batteries}}},
  doi          = {{10.1149/1945-7111/ac653f}},
  volume       = {{169}},
  year         = {{2022}},
}

@article{30922,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Pure iron is very attractive as a biodegradable implant material due to its high biocompatibility. In combination with additive manufacturing, which facilitates great flexibility of the implant design, it is possible to selectively adjust the microstructure of the material in the process, thereby control the corrosion and fatigue behavior. In the present study, conventional hot-rolled (HR) pure iron is compared to pure iron manufactured by electron beam melting (EBM). The microstructure, the corrosion behavior and the fatigue properties were studied comprehensively. The investigated sample conditions showed significant differences in the microstructures that led to changes in corrosion and fatigue properties. The EBM iron showed significantly lower fatigue strength compared to the HR iron. These different fatigue responses were observed under purely mechanical loading as well as with superimposed corrosion influence and are summarized in a model that describes the underlying failure mechanisms.</jats:p>}},
  author       = {{Wackenrohr, Steffen and Torrent, Christof Johannes Jaime and Herbst, Sebastian and Nürnberger, Florian and Krooss, Philipp and Ebbert, Christoph and Voigt, Markus and Grundmeier, Guido and Niendorf, Thomas and Maier, Hans Jürgen}},
  issn         = {{2397-2106}},
  journal      = {{npj Materials Degradation}},
  keywords     = {{Materials Chemistry, Materials Science (miscellaneous), Chemistry (miscellaneous), Ceramics and Composites}},
  number       = {{1}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Corrosion fatigue behavior of electron beam melted iron in simulated body fluid}}},
  doi          = {{10.1038/s41529-022-00226-4}},
  volume       = {{6}},
  year         = {{2022}},
}

@article{30923,
  abstract     = {{<jats:p>Additive manufacturing (AM) processes are not solely used where maximum design freedom meets low lot sizes. Direct microstructure design and topology optimization can be realized concomitantly during processing by adjusting the geometry, the material composition, and the solidification behavior of the material considered. However, when complex specific requirements have to be met, a targeted part design is highly challenging. In the field of biodegradable implant surgery, a cytocompatible material of an application-adapted shape has to be characterized by a specific degradation behavior and reliably predictable mechanical properties. For instance, small amounts of oxides can have a significant effect on microstructural development, thus likewise affecting the strength and corrosion behavior of the processed material. In the present study, biocompatible pure Fe was processed using electron powder bed fusion (E-PBF). Two different modifications of the Fe were processed by incorporating Fe oxide and Ce oxide in different proportions in order to assess their impact on the microstructural evolution, the mechanical response and the corrosion behavior. The quasistatic mechanical and chemical properties were analyzed and correlated with the final microstructural appearance.</jats:p>}},
  author       = {{Torrent, Christof J. J. and Krooß, Philipp and Huang, Jingyuan and Voigt, Markus and Ebbert, Christoph and Knust, Steffen and Grundmeier, Guido and Niendorf, Thomas}},
  issn         = {{2674-063X}},
  journal      = {{Alloys}},
  number       = {{1}},
  pages        = {{31--53}},
  publisher    = {{MDPI AG}},
  title        = {{{Oxide Modified Iron in Electron Beam Powder Bed Fusion—From Processability to Corrosion Properties}}},
  doi          = {{10.3390/alloys1010004}},
  volume       = {{1}},
  year         = {{2022}},
}