Theory of simultaneous electrochemical oxidation and protonation of polyaniline: polaronic model

Abstract

A model for electrochemical doping of polyaniline taking into account the presence of protons and polarons in the polymer bulk is considered. The essential feature of this model is the account of the interactions between these species. The expressions for oxidation and protonation isotherms and the corresponding voltammograms over a wide range of electrode potential and solution pH are derived. The theoretical results seem to be in qualitative agreement with the literature experimental data.