MECHANISTIC ASPECTS OF THE ELECTROCHEMICAL FORMATION OF POLYVERATROLE

Two layers with different morphologies are observed on a platinum surf ace when 1,2-dimethoxybenzene (Veratrole) is oxidized in CH3CN/Bu4NBF4 . The inner layer is composed by several smooth, uniform thin films th at are formed by instantaneous nucleation followed by bidimensional gr owth, while the external layer is formed according to instantaneous nu cleation-unidimensional growth and has a fibrillar morphology: As the material grows on the electrode surface, oscillations are observed dur ing chronoamperometry and they are related to the formation of a multi layer and coalescence of fibrils. In situ UV-visible spectroelectroche mical measurements allowed us to identify intermediate species and sug gest a reaction scheme that supports the stacking structure we have re ported in former papers.