Electrochemical doping of tetraethylammonium on C60 film

The electrochemical behavior of C60 films, which was prepared on electrode by solution casting method, during redox processes in acetonitrile solution containing tetraethylammonium perchlorate as supporting electrolyte was examined by means of cyclic voltammetry (CV) and electrochemical quartz crystal microbalance (EQCM) technique. In the CV behavior, there are four reductive waves at R1=-1.17 V, R2=-1.25 V, R3=-1.40 V and R4=-1.55 V vsFc/Fc+ which are corresponding to C60(TEA+)/C60-(TEA+), C60/C60, C60 (TEA+)/C60−2 reactions, respectively. There are four reoxidative waves at 04=-1.29 V, 03=-1.06 V, 02=-0.76 V and 01=-0.55 V vs Fc/Fc+ which are corresponding to C60−2 deposition on film, C60-/C60, and C60−2(TEA+)2/C60-(TEA+)/C60(TEA-), respectively. The dissolution/ depositive of C60−n(n=1,2) and doping / dedoping of TEA+ on C60 films at different potential are investigated and approved by EQCM studied.