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Incorporation and Deposition of Spin Crossover Materials into and onto Electrospun Nanofibers

  • We synthesized iron(II)-triazole spin crossover compounds of the type [Fe(atrz)3]X2 and incorporated and deposited them on electrospun polymer nanofibers. For this, we used two separate electrospinning methods with the goal of obtaining polymer complex composites with intact switching properties. In view of possible applications, we chose iron(II)-triazole-complexes that are known to exhibit spin crossover close to ambient temperature. Therefore, we used the complexes [Fe(atrz)3]Cl2 and [Fe(atrz)3](2ns)2 (2ns = 2-Naphthalenesulfonate) and deposited those on fibers of polymethylmethacrylate (PMMA) and incorporated them into core–shell-like PMMA fiber structures. These core–shell structures showed to be inert to outer environmental influences, such as droplets of water, which we purposely cast on the fiber structure, and it did not rinse away the used complex. We analyzed both the complexes and the composites with IR-, UV/Vis, Mössbauer spectroscopy, SQUID magnetometry, as well as SEM and EDX imaging. The analysis via UV/Vis spectroscopy, Mössbauer spectroscopy, and temperature-dependent magnetic measurements with the SQUID magnetometer showed that the spin crossover properties were maintained and were not changed after the electrospinning processes.

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Metadaten
Author:Maximilian Seydi KilicORCiD, Jules Brehme, Justus Pawlak, Kevin TranORCiD, Friedrich Wilhelm Bauer, Takuya ShigaORCiD, Taisei Suzuki, Masayuki Nihei, Ralf Franz SindelarORCiDGND, Franz RenzORCiD
URN:urn:nbn:de:bsz:960-opus4-28762
DOI:https://doi.org/10.25968/opus-2876
DOI original:https://doi.org/10.3390/polym15102365
ISSN:2073-4360
Parent Title (English):Polymers
Publisher:MDPI
Document Type:Article
Language:English
Year of Completion:2023
Publishing Institution:Hochschule Hannover
Release Date:2023/06/08
Tag:(coaxial)-electrospinning; PMMA; composites; coordination chemistry; nano fibers; spin crossover; triazole complexes
GND Keyword:Spin Crossover; Elektrospinnen
Volume:15
Issue:10
Article Number:2365
Link to catalogue:1858260825
DDC classes:660 Technische Chemie
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International