In situ radiotracer study of the formation and behaviour of polyaniline film electrodes using labelled aniline

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29 Citations (Scopus)

Abstract

The formation of polyaniline was studied on gold and on a platinized gold support using 14C-labelled aniline. The relationships between the charge involved in the formation of the film, the redox capacity and the amount of aniline are presented and discussed. It has been stated that: (i) the total amount of aniline forming the deposited film should be distinguished from the amount involved in the polymer responsible for the redox processes. The latter can be considered as the electroactive part of the film; (ii) the polymer film can be characterized only by values referred to the electroactive part; (iii) the ratio of the charge involved in the redox peaks to the amount of aniline in the electroactive part of the polymer film corresponds to 1 mol electrons mol-; and (iv) the formation of the electroactive polymer involves about 2 mol electrons referred to 1 mol of aniline in the electroactive part of the film. The dissolution processes occurring in the course of overoxidation are studied. A general scheme for the formation and oxidation of the polymer film is suggested.

Original languageEnglish
Pages (from-to)259-272
Number of pages14
JournalJournal of Electroanalytical Chemistry
Volume264
Issue number1-2
DOIs
Publication statusPublished - Jun 9 1989

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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