Matching Diethyl Terephthalate with n-Doped Conducting Polymers

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


研究成果: Article査読

19 被引用数 (Scopus)


The combination of small, high charge capacity molecules as pendant groups with a conducting polymer backbone having good electronic conductivity upon doping, gives the possibility to design a high capacity conducting redox polymer material for electric energy storage applications. The desired synergetic effect of the two components requires energy matching as well as chemical compatibility of the pendant group and the polymer backbone. Here we investigate the matching of diethyl terephthalate (DeT) with the thiophene-based conducting polymers polythiophene (PT), poly(3,4-ethylenedioxythiophene) (PEDOT), and polyphenylthiophene. We show that a stable and well-defined electrochemical response of DeT is achieved, together with all conducting polymers except for PT in tetrabutylammonium hexafluorophosphate electrolyte, indicating good energy match as well as chemical compatibility between DeT and polymers. By varying the size of ammonium cations in the electrolytes, we further show how this size affects the conductivity and the cycling stability of the polymers and also that the n-doping performance of all conducting polymers can be improved by the use of smaller alkyl ammonium cations. On the basis of these results, we suggest that PEDOT and PT are suitable candidates for a polymer backbone in conducting redox polymers with DeT pendant groups.

ジャーナルJournal of Physical Chemistry C
出版ステータスPublished - 2015 8月 20

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • エネルギー一般
  • 表面、皮膜および薄膜
  • 物理化学および理論化学


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