Spatially resolved electrochemical reversibility of a conducting polymer thin film imaged by oblique-incidence reflectivity difference

Abstract

The spatially resolved electrochemical reversibility of a polyaniline (PANI) thin film is successfully imaged by an oblique-incidence reflectivity difference (OIRD) technique. The electrochemical conversion of the PANI thin film from its completely reduced state to partially oxidized state gives rise to a considerable OIRD signal while upon the deterioration of the electrochemical reversibility, this OIRD signal decreases.