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Author: Herres-Pawlis, Sonja × Type: Text ×

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    NFDI4Chem - A Research Data Network for International Chemistry
    (Berlin : De Gruyter, 2023) Steinbeck, Christoph; Koepler, Oliver; Herres-Pawlis, Sonja; Bach, Felix; Jung, Nicole; Razum, Matthias; Liermann, Johannes C.; Neumann, Steffen
    Research data provide evidence for the validation of scientific hypotheses in most areas of science. Open access to them is the basis for true peer review of scientific results and publications. Hence, research data are at the heart of the scientific method as a whole. The value of openly sharing research data has by now been recognized by scientists, funders and politicians. Today, new research results are increasingly obtained by drawing on existing data. Many organisations such as the Research Data Alliance (RDA), the goFAIR initiative, and not least IUPAC are supporting and promoting the collection and curation of research data. One of the remaining challenges is to find matching data sets, to understand them and to reuse them for your own purpose. As a consequence, we urgently need better research data management.
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    Towards New Robust Zn(II) Complexes for the Ring-Opening Polymerization of Lactide Under Industrially Relevant Conditions
    (Weinheim : Wiley-VCH, 2019) Schäfer, Pascal M.; Dankhoff, Katja; Rothemund, Matthias; Ksiazkiewicz, Agnieszka N.; Pich, Andrij; Schobert, Rainer; Weber, Birgit; Herres-Pawlis, Sonja
    The synthesis of bio-based and biodegradable plastics is a hot topic in research due to growing environmental problems caused by omnipresent plastics. As a result, polylactide, which has been known for years, has seen a tremendous increase in industrial production. Nevertheless, the manufacturing process using the toxic catalyst Sn(Oct)2 is very critical. As an alternative, five zinc acetate complexes have been synthesized with Schiff base-like ligands that exhibit high activity in the ring-opening polymerization of non-purified lactide. The systems bear different side arms in the ligand scaffold. The influence of these substituents has been analyzed. For a detailed description of the catalytic activities, the rate constants kapp and kp were determined using in-situ Raman spectroscopy at a temperature of 150 °C. The polymers produced have molar masses of up to 71 000 g mol−1 and are therefore suitable for a variety of applications. Toxicity measurements carried out for these complexes proved the nontoxicity of the systems. © 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.
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    Undiscovered Potential: Ge Catalysts for Lactide Polymerization
    (Weinheim : Wiley-VCH, 2020) Rittinghaus, Ruth D.; Tremmel, Jakub; Růžička, Ales; Conrads, Christian; Albrecht, Pascal; Hoffmann, Alexander; Ksiazkiewicz, Agnieszka N.; Pich, Andrij; Jambor, Roman; Herres-Pawlis, Sonja
    Polylactide (PLA) is a high potential bioplastic that can replace oil-based plastics in a number of applications. To date, in spite of its known toxicity, a tin catalyst is used on industrial scale which should be replaced by a benign catalyst in the long run. Germanium is known to be unharmful while having similar properties as tin. Only few germylene catalysts are known so far and none has shown the potential for industrial application. We herein present Ge complexes in combination with zinc and copper, which show amazingly high polymerization activities for lactide in bulk at 150 °C. By systematical variation of the complex structure, proven by single-crystal XRD and DFT calculations, structure–property relationships are found regarding the polymerization activity. Even in the presence of zinc and copper, germanium acts as the active site for polymerizing probably through the coordination–insertion mechanism to high molar mass polymers. © 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.
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    NFDI4Chem - Fachkonsortium für die Chemie
    (Marburg : Philipps-Universität, 2021) Ortmeyer, Jochen; Schön, Florian; Herres-Pawlis, Sonja; Jung, Nicole; Bach, Felix; Liermann, Johannes; Neumann, Steffen; Popp, Christian; Razum, Matthias; Koepler, Oliver; Steinbeck, Christoph
    Als Fachkonsortium für die Chemie hat sich NFDI4Chem innerhalb der Nationalen Forschungsdateninfrastruktur (NFDI) gebildet. In diesem Beitrag stellt sich das Konsortium kurz vor und legt seine zentralen Ziele und wichtigsten Verbesserungen für das Forschungsdatenmanagement (FDM) in der Chemie sowie die praktischen Heraus-forderungen dar. Die Vision von NFDI4Chem ist die umfassende Digitalisierung und Vernetzung aller Prozesse im Umgang mit Forschungsdaten in der chemischen Forschung. Beginnend mit der Erzeugung der Daten, über deren Verarbeitung und Analyse bis hin zur Publikation wird eine modulare, vernetzte Infrastruktur aus Software-Tools, elektronischen Laborjournalen und Datenrepositorien entwickelt und bereitgestellt, die Forschende im Laboralltag unterstützt. Die Digitalisierung wird begleitet durch die Entwicklung von Minimalinformationen für Datenpublikationen, bestehend unter anderem aus Standards für Daten- und Metadatenformate sowie Ontologien zur semantischen Beschreibung. Seine Aufgaben verfolgt das NFDI4Chem-Konsortium wissenschaftsgeleitet und mit dem klaren Ziel, eine intuitiv und effizient nutzbare Infrastruktur zu entwickeln. Das Gestalten eines kulturellen Wandels, gemeinsam mit der wissenschaftlichen Community, zur Etablierung und Akzeptanz eines FAIRen Umgangsmit Daten ist daher ein weiteres wichtiges Element der NFDI4Chem-Aktivitäten.
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    Digitalizing the Chemical Landscape: A Comprehensive Overview and Progress Report of NFDI4Chem
    (Hannover : TIB Open Publishing, 2023) Koepler, Oliver; Steinbeck, Christoph; Bach, Felix; Herres-Pawlis, Sonja; Jung, Nicole; Liermann, Johannes; Neumann, Steffen; Razum, Matthias
    The Chemistry consortium NFDI4Chem aims to digitalise key steps in chemical research, supporting scientists in managing research data throughout its life cycle. The SmartLab, embedded in a federation of services, integrates various tools such as electronic lab notebooks, data repositories, and search services, to create a smart lab environment for structured data gathering. Utilizing terminology services and adhering to data format standards, NFDI4Chem promotes secure and FAIR data sharing, fostering collaboration and expediting scientific discoveries. This development is supported by community building measures, workshops, and training initiatives, along with collaboration on international minimum information standards.