Factors Affecting the Electroanalytical Behavior of Polypyrrole-Modified Electrodes Bearing Complexing Ligands

Kwok Keung SHIU*, Oi Yin Chan, Siu Kwong Pang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)

Abstract

Conducting polymer-modified electrodes based on the incorporation of different anionic complexing ligands, namely, alizarin red S, bathocuproine sulfonate, and sulfosalicylic acid, into polypyrrole film during electropolymerization were prepared. Electroanalysis of copper species, both Cu2+ and Cu+ ions, was achieved by extraction of the metal species into the ligand-incorporated polypyrrole electrode, and the electroactive copper complexes thus formed were determined voltammetrically. The effects of polymer matrix, complexing stability, structure, and stoichiometry of the copper complexes on the electrode response were examined. Results suggested that complexation stability was not the only factor governing the electroanalytical behavior.

Original languageEnglish
Pages (from-to)2828-2834
Number of pages7
JournalAnalytical Chemistry
Volume67
Issue number17
DOIs
Publication statusPublished - 1 Sep 1995

Scopus Subject Areas

  • Analytical Chemistry

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