Spectroscopy and electrochemistry of polyaniline in non-aqueous solution

Abstract

The cyclic voltammetric behaviour, in situ visible absorption and e.s.r. spectro-electrochemistry, as well as the ¹³C n.m.r. spectrum of polyanilime in non-aqueous solution have been investigated. It is shown by the absorption spectra of polyaniline in dimethyl sulphoxide (DMSO) solution at various polarized potentials that a self-transmission of protons appears between the nitrogen atoms linked on the polyaniline backbone during electrochemical redox processes. An increase of e.s.r. signal intensity with the oxidation potential of polyaniline in DMSO solution was observed. A mechanism of polyaniline solvation was suggested.