Preparation, Characterisation and Electrochromic Properties of Copolymer Films Based on 3,4-Ethylenedioxythiophene and Pyrrole-3-Carboxylic Acid

doi:10.7503/cjcu20160829

Abstract

Abstract:

Four new copolymers P(EDOT:P3C)-1, P(EDOT:P3C)-3, P(EDOT:P3C)-5, P(EDOT:P3C)-10 were prepared via electrochemical co-polymerization using different molar ratios(1:1, 3:1, 5:1, 10:1) of 3,4-ethylenedioxythiophene(EDOT) and pyrrole-3-carboxylic acid(P3C). The prepared four copolymers have good electrochromic properties, high electrochemical activity and good transmittance. Compared with poly(3,4-ethylenedioxythiophene)(PEDOT), the prepared copolymers have more abundant color change. P(EDOT:P3C)-1 has mainly four colors under different potentials, namely, dark red, pale brown, grey blue and blue. P(EDOT:P3C)-3 and P(EDOT:P3C)-5 possess the color change of purple, light purple and blue. P(EDOT:P3C)-10 can be dark purple, light purple and blue under different potentials. In addition, we also prepared a copolymer P(EDOT:P3C)-1-Ti based on EDOT, P3C and polyoxotitanate cluster[Ti₇(OEt)₁₉O₅(CoBr)]. This film not only exhibits typical electrochromic properties but also has the ability of electric-catalytic oxidation of water.

Key words: Ploymer(3,4-ethylenedioxythiophene-co-pyrrole-3-carboxylic acid), Electropolymerization, Electrochromism, Polyoxotitanate cluster

CLC Number:

O631
O646

TrendMD:

LV Yaokang, LIU Youyou, PAN Yun, LIU Gang, CHEN Jun, GUO Yun, CHU Wenjing, SHEN Lian, ZHANG Cheng. Preparation, Characterisation and Electrochromic Properties of Copolymer Films Based on 3,4-Ethylenedioxythiophene and Pyrrole-3-Carboxylic Acid[J]. Chem. J. Chinese Universities, 2017, 38(3): 484.

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