Photoreversible control over ionic conductivity of coumarin-containing poly(ionic liquid)-based solid electrolyte
Poly(ionic liquid)s (PILs) are promising candidates used as solid electrolytes because of their excellent electrochemical properties and improved processability. Introducing light-sensitive groups to PILs appears as an attractive strategy for developing novel smart PIL-based electronic devices. In t...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Budapest University of Technology and Economics
2023-04-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0012231&mi=cd |
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| Summary: | Poly(ionic liquid)s (PILs) are promising candidates used as solid electrolytes because of their excellent electrochemical properties and improved processability. Introducing light-sensitive groups to PILs appears as an attractive strategy for developing novel smart PIL-based electronic devices. In this work, a new photoresponsive PIL-based solid electrolyte was prepared by blending PILs containing coumarin groups (COU-PILs) with polyvinylidene fluoride hexafluoropropylene. It was found that the ionic conductivity of COU-PIL solid electrolytes (COU-PIL SEs) can be reversibly modulated upon alternative 365 and 254 nm light irradiation. In particular, the COU-PIL SEs exhibit a highly reversible and repeatable manipulation of ionic conductivity with a maximum conductivity modulation of 95%. This reversible control over ionic conductivity is attributed to the photodimerization/photocleavage behavior of the coumarin groups. |
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| ISSN: | 1788-618X |