ELECTROCHEMICAL PROPERTIES OF SOME BENZOXAZINES - CONDITIONS FOR ELECTROPOLYMERIZATION IN ALKALINE-MEDIUM

The electro-oxidation of three isomeric methyl benzoxazines has been s tudied in acetonitrile and methanol in either neutral or alkaline medi a. Oxidation potentials have been determined and the reactivity of the benzoxazine cation radicals estimated. In alkaline methanol, the mech anism changes in favour of oxidation of the benzoxazine anion, and for mation of a thin polymer layer is observed on metallic substrates. The resulting polymers were analysed by X-ray photoelectron spectroscopy measurements and a polymer formula has been proposed.