Attempt to incorporate ferrocenecarboxylic acid into polypyrrole during the electropolymerization of pyrrole in chloroform: its application to the electrocatalytic oxidation of ascorbic acid |
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Authors: | M H Pournaghi-Azar R Ojani |
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Institution: | (1) Electroanalytical Chemistry Laboratory, Faculty of Chemistry, University of Tabriz, Tabriz, Iran, IR |
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Abstract: | In this work, polypyrrole films with ferrocenecarboxylic acid incorporated (PPy/FCA) were prepared on a glassy carbon (GC)
electrode in chloroform as an aprotic solvent with low dielectric constant, convenient for the preparation of the films by
a precipitation mechanism. The electrochemical behaviour of the PPy/FCA-coated GC electrode was studied by cyclic voltammetry
in aqueous solution with low pH. The results obtained show that the electrochemical response of FCA incorporated in polypyrrole
is consistent with a reversible surface oxidation. An obvious electrocatalytic effect of PPy/FCA on the oxidation of ascorbic
acid is observed in aqueous solution.
Received: 30 July 1998 / Accepted: 3 March 1999 |
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Keywords: | Polypyrrole Ferrocenecarboxylic acid Electrocatalysis Ascorbic acid Chloroform |
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