BEHAVIOR OF SOME POLY(PYRROLE-ANTHRAQUINONE) FILMS IN DMSO ELECTROLYTES

Several films of poly(pyrrole-anthraquinone) have been prepared by the electropolymerization in organic media of anthraquinones adequately substituted by some N-alkylpyrroles. These films have been studied mainly by electrochemical methods in DMSO with either TEAFB or LiClO//4 as the supporting salt. Bonded anthraquinones can be reversibly reduced to their radical anions or dianions with a fair yield, except on slow or prolonged cycling where the protonation effect modifies this behaviour. Spectroelectrochemical studies confirm these facts and additionally allow the probable complex formations in fully reduced films to be detected.