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Published in: Journal of Materials Science 20/2021

05-04-2021 | Polymers & biopolymers

Multifunctional donor–acceptor conjugated polymers containing isoindigo and benzothiadiazole moieties for electrochromic, photoelectric sensor, 2,4,6-trinitrophenol detection and resistance memory device

Authors: Xiaoxue Lin, Qingyi Lu, Caiyu Yang, Yan Wang, Wei Zhang, Dongxu Li, Yanyu Gao, Haijun Niu, Wen Wang

Published in: Journal of Materials Science | Issue 20/2021

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Abstract

Six novel donor–acceptor conjugated polymers were designed and synthesized by the Stille coupling reaction of triarylamine derivatives as donor units with isoindigo derivative or benzothiadiazole as acceptor units. These polymers have good solubility and film-forming properties in common organic solvents. The char yields of polymers in nitrogen atmosphere at 800 °C range from 34 to 60%. In particular, these conjugated polymers exhibit high photoluminescence (PL) quantum efficiency (up to 42.9%). These polymers demonstrate two pairs of redox peaks with low onset voltages (0.51 V vs. Ag/AgCl for P5) and narrow band gaps (Eg = 2.52 ~ 2.95 eV). The colors of all polymer films change significantly with the applied voltage increasing. Moreover, the polymers show high coloring efficiency (up to 163%) and maintain good electrochromic (EC) cycle stability over 500 s. In addition, excellent results in terms of memory storage (ON/OFF = 1.2 × 104), 2,4,6-Trinitrophenol (TNP) detection (Ksv = 45,790 M-1) can meet the requirements of multifunctional materials.

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Appendix
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Metadata
Title
Multifunctional donor–acceptor conjugated polymers containing isoindigo and benzothiadiazole moieties for electrochromic, photoelectric sensor, 2,4,6-trinitrophenol detection and resistance memory device
Authors
Xiaoxue Lin
Qingyi Lu
Caiyu Yang
Yan Wang
Wei Zhang
Dongxu Li
Yanyu Gao
Haijun Niu
Wen Wang
Publication date
05-04-2021
Publisher
Springer US
Published in
Journal of Materials Science / Issue 20/2021
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-021-05952-9

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