Identification of the First Steps of the Electrochemical Polymerization of Pyrroles by Means of Fast Potential Step Techniques

Article abstract of DOI:10.1021/j100177a096

The early stages of the electrochemical polymerization of three substituted pyrroles were investigated by means of fast double potential step chronoamperometry thanks to the use of electrodes in the micrometer diameter range.Systematic analysis of the reaction kinetics allowed the conclusion that, for all three pyrroles, the cation radicals, rather than the neutral radicals that would result from their deprotonation, are involved in the carbon-carbon bond forming process and that they couple between themselves rather than with the starting monomer.