Electrocatalytic properties of chemically polymerized films of cobalt, iron and manganese tetrakis(o-aminophenyl)porphyrins

J. Hayon, A. Raveh, A. Bettelheim

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


Polymeric films of tetrakis(o-aminophenyl)porphyrins (abbreviated H2(o-NH2)TPP) and their cobalt, iron and manganese analogs were obtained by reacting the aniline groups with nitrite ions in an acidic medium. The electrocatalytic properties of the chemically polymerized (CP) Co(o-NH2)TPP films towards O2 reduction and CP-Fe(o-NH2)TPP towards the reduction of nitrite ions are described and compared with those reported in the literature for the reduction of dioxygen by electropolymerized (EP) films of Co(o-NH2)TPP and for nitrite reduction by dissolved and electropolymerized iron porphyrins. It is also shown that CP-Mn(o-NH2)TPP films mediate the electro-oxidation of glucose oxidase. Amperometric measurements conducted with glucose electrodes based on these films show that the current is linearly proportional to glucose concentrations up to 6 × 10-2 M. This linearity range is two orders of magnitude higher than that previously reported for Mn(o-NH2)TPP and enzyme both immobilized in colloidal graphite.

Original languageEnglish
Pages (from-to)209-221
Number of pages13
JournalJournal of Electroanalytical Chemistry
Issue number1-2
StatePublished - 15 Nov 1993
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering (all)
  • Electrochemistry


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