Publikation: Tuning the glass transition of siloxane-based poly(ionic liquid)s towards high ion conductivity
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2021
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Journal of Polymer Science. Wiley-Blackwell. 2021, 59(14), pp. 1518-1527. ISSN 2642-4150. eISSN 2642-4169. Available under: doi: 10.1002/pol.20210200
Zusammenfassung
Herein, we report a simple and versatile synthetic approach towards siloxane-based poly(ionic liquid)s (PILs) with unusually low glass transition temperatures (Tg) down to −73°C, and thus “liquid-like” behavior at room temperature. We designed a polydimethylsiloxane-derived copolymer carrying dialkylimidazolium moieties, and by careful selection of the side-chain length and the type of anions we were able to manipulate its Tg over a wide range and reach high ionic conductivities (σDC) up to 4.8 × 10−5 S/cm at 300 K. The ionized species make up only a minor fraction (<25 mol%) of the overall repeating units and are supposedly randomly distributed: Yet our results indicate dramatic effects on the thermal properties due to repulsive interactions between ionic and non-ionic segments.
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REITER, Manuel, Arthur Markus ANTON, Jian CHANG, Friedrich KREMER, Miriam M. UNTERLASS, Jiayin YUAN, 2021. Tuning the glass transition of siloxane-based poly(ionic liquid)s towards high ion conductivity. In: Journal of Polymer Science. Wiley-Blackwell. 2021, 59(14), pp. 1518-1527. ISSN 2642-4150. eISSN 2642-4169. Available under: doi: 10.1002/pol.20210200BibTex
@article{Reiter2021-07-15Tunin-54801,
year={2021},
doi={10.1002/pol.20210200},
title={Tuning the glass transition of siloxane-based poly(ionic liquid)s towards high ion conductivity},
number={14},
volume={59},
issn={2642-4150},
journal={Journal of Polymer Science},
pages={1518--1527},
author={Reiter, Manuel and Anton, Arthur Markus and Chang, Jian and Kremer, Friedrich and Unterlass, Miriam M. and Yuan, Jiayin}
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<dcterms:abstract xml:lang="eng">Herein, we report a simple and versatile synthetic approach towards siloxane-based poly(ionic liquid)s (PILs) with unusually low glass transition temperatures (T<sub>g</sub>) down to −73°C, and thus “liquid-like” behavior at room temperature. We designed a polydimethylsiloxane-derived copolymer carrying dialkylimidazolium moieties, and by careful selection of the side-chain length and the type of anions we were able to manipulate its T<sub>g</sub> over a wide range and reach high ionic conductivities (σ<sub>DC</sub>) up to 4.8 × 10<sup>−5 </sup>S/cm at 300 K. The ionized species make up only a minor fraction (<25 mol%) of the overall repeating units and are supposedly randomly distributed: Yet our results indicate dramatic effects on the thermal properties due to repulsive interactions between ionic and non-ionic segments.</dcterms:abstract>
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