Preparation and properties of polyaniline doped with poly(thiophenylenesulfonic acid)

Kenji Miyatake, Jun Sang Cho, Shinji Takeoka, Eishun Tsuchida*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


A novel polyaromatic acid, poly(thiophenylenesulfonic acid) (PTPSA), prepared from a soluble precursor of poly(arylenesulfonium salt) was employed as a dopant for polyaniline (PAn). The electro-oxidative polymerization of aniline in PTPSA aqueous solution gives an electroactive PAn/PTPSA composite with three redox couples at 0.16, 0.53, and 0.71V (vs. SCE). Composites of different molar ratio ([SO3H]/[An] = 0.10, 0.21, 0.42, 0.50, 0.83, 1.67) was prepared in order to confirm the transformation from the emeraldine base to its PTPSA salt, where a quantitative doping reaction was observed by means of UV-VIS and IR measurements. The thermogravimetric analysis revealed that the composites do not decompose up to 200°C in nitrogen atmosphere. The composite ([SO3H]/[An] = 0.50) shows an electrical conductivity of 1.5 S · cm-1 at 30°C and 3.0 × 10-1 S · cm-1 at 170°C. The composite retains its conductivity after heating at 150°C for 24 h.

Original languageEnglish
Pages (from-to)2597-2601
Number of pages5
JournalMacromolecular Chemistry and Physics
Issue number12
Publication statusPublished - 1999 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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