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Soluble molecular switches in electrospun nanofibers

  • Compounds that exhibit the spin crossover effect are known to show a change of spin states through external stimuli. This reversible switching of spin states is accompanied by a change of the properties of the compound. Complexes, like iron (II)-triazole complexes, that exhibit this behavior at ambient temperature are often discussed for potential applications. In previous studies we synthesized iron (II)-triazole complexes and implemented them into electrospun nanofibers. We used Mössbauer spectroscopy in first studies to prove a successful implementation with maintaining spin crossover properties. Further studies from us showed that it is possible to use different electrospinning methods to either do a implementation or a deposition of the synthesized solid SCO material into or onto the polymer nanofibers. We now used a solvent in which both, the used iron (II)-triazole complex [Fe(atrz)3](2 ns)2 and three different polymers (Polyacrylonitrile, Polymethylmethacrylate and Polyvinylpyrrolidone), are soluble. This shall lead to a higher homogeneous distribution of the complex along the nanofibers. Mössbauer spectroscopy and other measurements are therefore in use to show a successful implementation without any significant changes to the complex.

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Author:Jules BrehmeORCiD, Maximilian Seydi KilicORCiD, Justus Pawlak, Franz Renz, Ralf Franz SindelarORCiDGND
DOI original:https://doi.org/10.1007/s10751-024-01842-z
Parent Title (English):Hyperfine interactions
Document Type:Conference Proceeding
Year of Completion:2024
Publishing Institution:Hochschule Hannover
Contributing Corporation:37th International Conference on the Applications of the Mössbauer Effect, ICAME 2023, Cartagena de Indias, Colombia, 3. - 8. September 2023
Release Date:2024/01/29
Tag:Electrospinning; Molecular switches; Mössbauer; SCO
GND Keyword:Elektrospinnen; Triazole; Mößbauer-Spektroskopie
Article Number:10
Page Number:13
Institutes:Fakultät II - Maschinenbau und Bioverfahrenstechnik
DDC classes:660 Technische Chemie
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International