Effects of polymer thickness on the potentiometric pH responses of polypyrrole modified glassy carbon electrodes

Kwok-Keung Shiu*, Fa-Yi Song, Kam-Wing Lau

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

41 Citations (Scopus)
7 Downloads (Pure)

Abstract

The potentiometric pH response of electropolymerized polypyrrole modified glassy carbon electrodes as a function of polymer film thickness was examined. Electrodes coated with thicker polypyrrole films showed mixed potentiometric responses toward both cationic and anionic species, while thinner polypyrrole films (<2 μm) showed good linear response to pH changes for the pH range between 2 and 12. The possible mechanism for such behavior was discussed.

Original languageEnglish
Pages (from-to)109-117
Number of pages9
JournalJournal of Electroanalytical Chemistry
Volume476
Issue number2
DOIs
Publication statusPublished - 1 Nov 1999

Scopus Subject Areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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