ELECTROCHEMICAL BEHAVIOR OF TETRATHIAFULVALENE-TETRACYANOQUINODIMETHANE ELECTRODES IN AQUEOUS-MEDIA

Compacted pellets of tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) were prepared and the properties of this material as an electrode in aqueous media were investigated. The electrode was stable over a potential range of about 0.9 V; within this region the electrode exhibited residual faradaic currents of less than 1-2 µA/cm2 and the oxidation and reduction of soluble redox couples at this electrode could be carried out. Upon exceeding the potential limits of stability of the electrode, the subsequent voltammograms showed symmetrical peaks attributable to insoluble compounds of TTF or TCNQ and supporting electrolyte ions (e.g., TTFBr, KTCNQ). The redox reaction of these species could also be observed in the cyclic voltammograms. © 1979, American Chemical Society. All rights reserved.