Electrochemical copolymerization of 3,4-ethylenedioxythiophene and 5-methylindole and characterizations of the copolymers

Authors

  • Guangming Nie,

    1. Key Laboratory of Eco-chemical Engineering, Ministry of Education; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of China
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  • Liangyan Qu,

    1. Key Laboratory of Eco-chemical Engineering, Ministry of Education; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of China
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  • Yan Zhang,

    1. Key Laboratory of Eco-chemical Engineering, Ministry of Education; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of China
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  • Jingkun Xu,

    1. Key Laboratory of Eco-chemical Engineering, Ministry of Education; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of China
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  • Shusheng Zhang

    Corresponding author
    1. Key Laboratory of Eco-chemical Engineering, Ministry of Education; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of China
    • Key Laboratory of Eco-chemical Engineering, Ministry of Education; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of China
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Abstract

Electrocopolymerization of 3,4-ethylenedioxythiophene (EDOT) and 5-methylindole (5MeIn) was successfully carried out in acetonitrile containing lithium perchlorate as supporting electrolyte although the oxidation potentials of 5MeIn and EDOT were quite different. The influence of feed ratios and applied potentials on the copolymerization were investigated. The novel low band gap copolymers own both the advantages of P5MeIn and poly(3,4-ethylenedioxythiophene), i.e., good redox activity, good thermal stability, and high conductivity. The resulting copolymers were characterized by electrochemistry, FT-IR and ultra violet-visible spectroscopy, elemental analysis, thermal analysis, conductivity, and scanning electron microscopy, respectively. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

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