Electrochemical preparation of a novel electro active / conductive polymer based on βnaphthylamine in aqueous acid media

Electro oxidation of β-naphthylamine (β-NA) in different aqueous acid media was investigated. The formation of a film adhered to the electrode surface was observed as a principal product and for which a polymer structure through C-N coupling is proposed. A standard three-electrode electrochemical cell was used for voltammetric experiments. In this system, glassy carbon rod, platinum wire, and KCI/ saturated Ag/AgCl were used, respectively as the working, counter and the reference electrodes. From the analysis of the voltammetric and spectroscopic experiments some aspects of the mechanism of electro oxidation of β-NA leading to the formation of the film was proposed. The effects of various physical and electrochemical parameters such as the type of supporting electrolyte, temperature of the cell, P H, concentration of the monomer, scan rate and the number of scan cycles were studied. The electrochemical behaviour of the film was reported as a function of these parameters. A quasi-reversible behaviour was observed from cyclic voltammograms obtained in different acid solutions. The film behaved as a thin-layer cell when it was obtained at low scan rates and dilute solutions of the monomer