AFM study of the initial stages of polyaniline growth on ITO electrode

In this work, the initial stages (nucleation and growth) of aniline electro polymerisation on ITO electrodes in 0.5 mol 1(-1) sulphuric acid were studi ed. The polyaniline nucleation was promoted by chronoamperometry and the re sults indicated that the ITO surface morphology exerts a profound influence in the deposit morphology at the initial stage of polymer growth. At these very short deposition times, it is impossible to distinguish between fibri lar and globular structures, which are characteristic of thick polyaniline films, obtained only in later stages of deposition. (C) 2001 Elsevier Scien ce B.V. All rights reserved.