Details
| Original language | English |
|---|---|
| Article number | 2365 |
| Journal | Polymers |
| Volume | 15 |
| Issue number | 10 |
| Publication status | Published - 18 May 2023 |
Abstract
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.
Keywords
- (coaxial)-electrospinning, composites, coordination chemistry, nano fibers, PMMA, spin crossover, triazole complexes
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- Polymers and Plastics
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In: Polymers, Vol. 15, No. 10, 2365, 18.05.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Incorporation and Deposition of Spin Crossover Materials into and onto Electrospun Nanofibers
AU - Kilic, Maximilian Seydi
AU - Brehme, Jules
AU - Pawlak, Justus
AU - Tran, Kevin
AU - Bauer, Friedrich Wilhelm
AU - Shiga, Takuya
AU - Suzuki, Taisei
AU - Nihei, Masayuki
AU - Sindelar, Ralf Franz
AU - Renz, Franz
N1 - Funding Information: The authors would thank the Deutsche Forschungsgemeinschaft (DFG) and the Hannover School for Nanotechnology (HSN) for financial funding, as well as, the Leibniz University Hannover (LUH), the University of Tsukuba, the Laboratory of Nano and Quantum Engineering (LNQE), the University of Applied Science and Arts (HsH) and the Deutscher Akademischer Austauschdienst (DAAD).
PY - 2023/5/18
Y1 - 2023/5/18
N2 - 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.
AB - 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.
KW - (coaxial)-electrospinning
KW - composites
KW - coordination chemistry
KW - nano fibers
KW - PMMA
KW - spin crossover
KW - triazole complexes
UR - http://www.scopus.com/inward/record.url?scp=85160626135&partnerID=8YFLogxK
U2 - 10.3390/polym15102365
DO - 10.3390/polym15102365
M3 - Article
AN - SCOPUS:85160626135
VL - 15
JO - Polymers
JF - Polymers
SN - 2073-4360
IS - 10
M1 - 2365
ER -