Electrochemical Polymerization of Aniline and N-Alkylanilines

Akira Watanabe, Kunio Mori, Atsushi Iwabuchi, Yasunori Iwasaki, Yoshiro Nakamura, Osamu Ito

Research output: Contribution to journalArticlepeer-review

143 Citations (Scopus)


N-Alkylanilines were electrochemically oxidized in H2SO4 aqueous solution. The electrochemical, spectroscopic, and electric properties of the oxidation products were investigated by comparing them with those of polyaniline. Although the film-forming ability on the electrode surface decreases with the bulkiness of the alkyl group, the solubility of the oxidation products increased with increasing the bulkiness of the alkyl group. The oxidation products of N-ethyl-, N-propyl-, and N-butylaniline are almost soluble in THF. From the GPC elution pattern showing the existence of high molecular weight components, formation of poly(N-alkylaniline)s was confirmed. The electric conductivities of these polymers were decreased by the bulkiness of the substituents. An increase in the conductivity accompanies the shift of the absorption bands in the near-IR region to the longer wavelength and the significant changes of ESR signals.

Original languageEnglish
Pages (from-to)3521-3525
Number of pages5
Issue number9
Publication statusPublished - 1989 Sep 1
Externally publishedYes

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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