ELECTROCHEMICAL DOPING OF TETRAMETHYLAMMONIUM IONS INTO C-60 FILM

The electrochemical properties of C-60 films were studied by cyclic vo ltammetry and electrochemical quartz crystal microbalance technique in organic electrolyte solution. Tetramethylammonium perchlorate was use d as a supporting electrolyte in acetonitrile solution. Thin films are prepared by solvent quickly evaporated method on a preheated glassy c arbon electrode. The electrochemical response of C-60 films is consist ent with a reduction mechanism that is domina:ed by ion transport to f orm contact ion pair. In the proposed mechanism, swelling of the film with solvent and intercalation of cations into the film proceed parall elly. The stability of the film with respect to successive redox cycle s was also interpreted.