Effect of the Linker in Terephthalate-Functionalized Conducting Redox Polymers

Li Yang, Xiao Huang, Adolf Gogoll, Maria Strømme, Martin Sjödin*

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

The combination of high capacity redox active pendent groups and conducting polymers, realized in conducting redox polymers (CRPs), provides materials with high charge storage capacity that are electronically conducting which makes CRPs attractive for electrical energy storage applications. In this report, six polythiophene and poly(3,4-ethylenedioxythiophene)(PEDOT)-based CRPs with a diethyl terephthalate unit covalently bound to the polymer chain by various linkers have been synthesized and characterized electrochemically. The effects of the choice of polymer backbone and of the nature of the link on the electrochemistry, and in particular the cycling stability of these polymers, are discussed. All CRPs show both the doping of the polymer backbone as well as the redox behavior of the pendent groups and the redox potential of the pendent groups in the CRPs is close to that of corresponding monomer, indicating insignificant interaction between the pendant and the polymer backbone. While all CRPs show various degrees of charge decay upon electrochemical redox conversion, the PEDOT-based CRPs show significantly improved stability compared to the polythiophene counterparts. Moreover, we show that by the right choice of link the cycling stability of diethyl terephthalate substituted PEDOT-based CRPs can be significantly improved.

本文言語English
ページ(範囲)149-155
ページ数7
ジャーナルElectrochimica Acta
222
DOI
出版ステータスPublished - 2016 12 20
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)
  • 電気化学

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