An electrochemical quartz crystal microbalance study of the influence of pH and solution composition on the electrochemical behaviour of poly(aniline) films

J. Bácskai, V. Kertész, G. Inzelt

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

There is a significant accumulation of solution species in the film in all solution compositions and in the whole potential range studied. In 10 mol dm-3 HClO4 or H2SO4 solutions the films become highly swollen, which eventually leads to the dissolution of the films. Significant mass changes during the oxidation of the leucoemeraldine to emeraldine form can be observed only in the pH interval between pH 1 and 3, where the reduced poly(aniline) is practically uprotonated, while the half-oxidized material is protonated.

Original languageEnglish
Pages (from-to)393-397
Number of pages5
JournalElectrochimica Acta
Volume38
Issue number2-3
DOIs
StatePublished - Feb 1993
Externally publishedYes

Funding

Acknowledgements-Thsist udyw as supportedb y the Hun-garian National ResearchF und (OTKA-2110)a nd by the Soros Foundation.

Keywords

  • poly(aniline)
  • polymer film electrodes
  • protonation
  • quartz crystal microbalance
  • redox mechanism.

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