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D‐A type hybrid polymers based on EDOT and various benzodiazoles for electrochromic materials
Author(s) -
Xu Haoran,
Hou Yanjun,
Li Rui,
Chang Lijing,
Ma Yang,
Miao Shoulei,
Niu Haijun
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50926
Subject(s) - electrochromism , materials science , polymer , stille reaction , monomer , electrochromic devices , polymer chemistry , electrochemistry , polymerization , chemical engineering , chemistry , composite material , electrode , engineering
Abstract Two donor units (D)‐acceptor units (A) type monomers were synthesized by Stille coupling reaction, and then three D‐A type hybrid polymers based on 3,4‐ethylenedioxythiophene and various benzodiazoles were synthesized by electrochemical polymerization. Spectroelectrochemical and kinetic studies of these polymers showed that all polymer films exhibited excellent electrochromic behavior, obvious optical contrast, and excellent stability. Among them, the response time of P3 film was the shortest ( t c = 1.6 s, t b = 2.2 s), the coloring efficiency of P2 film was the highest ( CE = 333 cm 2 ·C −1 ), and the stability of P1 was the best (the ΔT loss of P1 after 1000 s cycles is only 2.3%). Therefore, these data prove that these new polymers have great potential in applications as electrochromic materials.