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Synthesis and Electrochromic Properties of Star‐Shaped Oligomers with Phenyl Cores
Author(s) -
Zeng Jinming,
Zhang Xiaoyuan,
Zhu Xiaoting,
Liu Ping
Publication year - 2017
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201700890
Subject(s) - electrochromism , benzene , ethylenedioxy , oligomer , electrochemistry , doping , conjugated system , materials science , polymer , polymer chemistry , photochemistry , organic chemistry , chemistry , electrode , composite material , optoelectronics , alkyl
A series of star‐shaped conjugated oligomers, 1,3,5‐tri(2′‐thienyl) benzene (3TB), 1,3,5‐tri(3′,4′‐ethylenedioxythienyl) benzene (3EB), 1,3,5‐tri[5′,2“‐(3”,4“‐ethylenedioxy‐thienyl)‐2′‐thienyl] benzene (3ETB), and 1,3,5‐tri[5′,2”‐(3“,4”‐ethylenedioxy‐thienyl)‐2′‐thienyl]‐4‐(3′,4′‐ethylenedioxythienyl)benzene (3TB‐4EDOT), were synthesized. The star‐shaped polymer, poly(1,3,5‐tri[5′,2“‐(3”,4“‐ethylenedioxythineyl)‐2′‐thienyl]benzene) (P3ETB), was also prepared. The electrochemical and electrochromic properties of these conjugated oligomers and polymer were investigated. These oligomer and polymer films showed reversible, clear color changes upon electrochemical doping and dedoping. The color of the P3ETB film reversibly changed from orange to blue under doping and dedoping. The switching times for doping and dedoping were 1.2 and 0.9 s, respectively.