THE MECHANISMS OF ELECTROPOLYMERIZATION OF POLY(N-VINYLCARBAZOLE) FILMS ON THE PLATINUM-ELECTRODE .1.

The poly(N-vinylcarbazole) films were prepared under potentiodynamic a nd potentiostatic control in acetonitrile solution containing 0.1 M Li ClO4 and 0.01 M N-vinylcarbazole monomer. The initial stage of electro polymerization in potentiostatic experiments, occurred via nucleation and growth mechanism and was studied in the range of potentials from 0 .68V to 0.9V vs. Ag/Ag+ reference electrode. It was found, that the re gime of the process depends on the potential. It changes from progress ive nucleation and 3D growth at the lowest values of potentials, to th e progressive 2D growth at the medium potential values and finally the process becomes diffusion controlled at the highest values of potenti als. The preliminary studies of electrochemical activity of the films were carried out by the use of cyclic voltammetry and chronoamperometr y.