Details
| Original language | English |
|---|---|
| Article number | 1311 |
| Number of pages | 9 |
| Journal | Polymers |
| Volume | 16 |
| Issue number | 10 |
| Publication status | Published - 7 May 2024 |
Abstract
Coordination compounds, like iron(II) triazole complexes, exhibit spin crossover (SCO) behavior at around room temperature. Therefore, they are interesting for a variety of possible applications, and it is convenient to integrate them into polymers. Due to a reduction of the iron content and thus also 57Fe content in the sample through integration in polymers, Mössbauer measurements are only possible with greater difficulty or very long measurement times without expensive enrichment of the samples with 57Fe. So, other ways of improving the Mössbauer signal for these composite materials are necessary. Therefore, we pressed these composite materials to improve the Mössbauer spectra. In this study, we synthesized an iron(II) triazole spin crossover complex and an electrospun polymer complex composite nanofiber material including the same complex. For both products, Mössbauer measurements were performed at room temperature before and after using a press to show that the complex composite is not harmed through pressing. We investigate the influence of the pressing impact on the Mössbauer measurements in the context of measurement statistics and the measured signals. We show that pressing is not connected to any changes in the sample regarding the spin and oxidation state. We present that pressing improves the statistics of the Mössbauer measurements significantly. Furthermore, we use SEM measurements and PXRD to investigate whether or not the obtained fiber mats are destroyed in the pressing process.
Keywords
- composites, coordination chemistry, electrospinning, molecular switch, Mössbauer, nanofiber, pellet, 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. 16, No. 10, 1311, 07.05.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Pressing of Functionalized Polymer Composite Materials to Improve Mössbauer Measurement Signals
AU - Pawlak, Justus
AU - Brehme, Jules
AU - Kilic, Maximilian Seydi
AU - Tran, Kevin
AU - Koch, Justin
AU - Beyki, Mohammad
AU - Sindelar, Ralf
AU - Patzke, Robert
AU - Renz, Franz
N1 - Publisher Copyright: © 2024 by the authors.
PY - 2024/5/7
Y1 - 2024/5/7
N2 - Coordination compounds, like iron(II) triazole complexes, exhibit spin crossover (SCO) behavior at around room temperature. Therefore, they are interesting for a variety of possible applications, and it is convenient to integrate them into polymers. Due to a reduction of the iron content and thus also 57Fe content in the sample through integration in polymers, Mössbauer measurements are only possible with greater difficulty or very long measurement times without expensive enrichment of the samples with 57Fe. So, other ways of improving the Mössbauer signal for these composite materials are necessary. Therefore, we pressed these composite materials to improve the Mössbauer spectra. In this study, we synthesized an iron(II) triazole spin crossover complex and an electrospun polymer complex composite nanofiber material including the same complex. For both products, Mössbauer measurements were performed at room temperature before and after using a press to show that the complex composite is not harmed through pressing. We investigate the influence of the pressing impact on the Mössbauer measurements in the context of measurement statistics and the measured signals. We show that pressing is not connected to any changes in the sample regarding the spin and oxidation state. We present that pressing improves the statistics of the Mössbauer measurements significantly. Furthermore, we use SEM measurements and PXRD to investigate whether or not the obtained fiber mats are destroyed in the pressing process.
AB - Coordination compounds, like iron(II) triazole complexes, exhibit spin crossover (SCO) behavior at around room temperature. Therefore, they are interesting for a variety of possible applications, and it is convenient to integrate them into polymers. Due to a reduction of the iron content and thus also 57Fe content in the sample through integration in polymers, Mössbauer measurements are only possible with greater difficulty or very long measurement times without expensive enrichment of the samples with 57Fe. So, other ways of improving the Mössbauer signal for these composite materials are necessary. Therefore, we pressed these composite materials to improve the Mössbauer spectra. In this study, we synthesized an iron(II) triazole spin crossover complex and an electrospun polymer complex composite nanofiber material including the same complex. For both products, Mössbauer measurements were performed at room temperature before and after using a press to show that the complex composite is not harmed through pressing. We investigate the influence of the pressing impact on the Mössbauer measurements in the context of measurement statistics and the measured signals. We show that pressing is not connected to any changes in the sample regarding the spin and oxidation state. We present that pressing improves the statistics of the Mössbauer measurements significantly. Furthermore, we use SEM measurements and PXRD to investigate whether or not the obtained fiber mats are destroyed in the pressing process.
KW - composites
KW - coordination chemistry
KW - electrospinning
KW - molecular switch
KW - Mössbauer
KW - nanofiber
KW - pellet
KW - spin crossover
KW - triazole complexes
UR - http://www.scopus.com/inward/record.url?scp=85194282146&partnerID=8YFLogxK
U2 - 10.3390/polym16101311
DO - 10.3390/polym16101311
M3 - Article
AN - SCOPUS:85194282146
VL - 16
JO - Polymers
JF - Polymers
SN - 2073-4360
IS - 10
M1 - 1311
ER -