Electrosynthesis and characterization of a new conducting copolymer from 2'-aminomethyl-3,4-ethylenedioxythiophene and 3,4-ethylenedioxythiophene

Hui Sun, Baoyang Lu, Xuemin Duan*, Jingkun Xu, Liqi Dong, Xiaofei Zhu, Kaixin Zhang, Dufen Hu, Shouli Ming

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Citations (Scopus)
27 Downloads (Pure)

Abstract

The copolymerization of 2'-aminomethyl-3,4-ethylenedioxythiophene (EDOT-MeNH2) and 3,4-ethylenedioxythiophene (EDOT) was successfully performed electrochemically in acetonitrile (CH3CN) containing tetrabutylammonium hexafluorophosphate (Bu4NPF6) as the supporting electrolyte by direct anodic oxidation of the monomer mixtures. A series of experiments with different monomer feed ratios were carried out to investigate the influence of monomer feed ratio on the electrochemical copolymerization and the overall properties of the copolymer films. As-formed novel copolymers owned both the advantages of poly(2'-aminomethyl-3,4-ethylenedioxythiophene) (PEDOT-MeNH2) and poly(3,4-ethylenedioxythiophene) (PEDOT), i.e., good electrochemical behavior, excellent electrochemical stability, and good thermal stability. Spectroelectrochemistry analysis of copolymer with the feed ratio of 1:1 reflected λmax due to the π-π* transition and polaron band formation was found to be 620 nm and the band gap (Eg) was calculated as 1.67 eV. The structure, thermogravimetry and morphology of the copolymers were investigated by infrared spectroscopy, thermal analysis, and scanning electron microscopy, respectively.

Original languageEnglish
Pages (from-to)3236-3249
Number of pages14
JournalInternational Journal of Electrochemical Science
Volume10
Issue number4
Publication statusPublished - 2015
Externally publishedYes

Bibliographical note

Copyright the Author(s) 2015. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • Conducting polymers
  • Electrochemical copolymerization
  • Poly(2'-aminomethyl-3,4-ethylenedioxythiophene) (PEDOT-MeNH<inf>2</inf>)
  • Poly(3,4-ethylenedioxythiophene) (PEDOT)
  • Spectroelectrochemistry

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