Anion-Selective Electrodes Based on Electropolymerized Porphyrin Films

Sylvia Daunert, Shelley Wallace, Antonio Florido, Leonidas G. Bachas

Research output: Contribution to journalArticlepeer-review

167 Scopus citations


Ion-selective membranes were prepared by electropolymerization of cobalt(II) tetrakis(o-aminophenyl)porphyrin on a glassy-carbon surface for the development of potentiometric sensors. The resulting electrodes demonstrate a near-Nernstian response to anions and have submicromolar detection limits and good selectivity properties. The selectivity pattern observed is thiocyanate > perchlorate > iodide > nitrite ∼ salicylate ∼ bromide > chloride > bicarbonate > phosphate. The parameters that affect the response of these electrodes, including the electropolymerization conditions, are also described.

Original languageEnglish (US)
Pages (from-to)1676-1679
Number of pages4
JournalAnalytical Chemistry
Issue number17
StatePublished - Sep 1 1991
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry


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