Ultramicroelectrode array behavior of one-dimensional organic conductor electrodes

Tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) electrodes were prepared by two methods that produced electrodes with different structures. This was confirmed by scanning electron microscopy, which also revealed the ultramicroelectrode arraylike structure of TTF-TCNQ electrodes. Electrochemical behavior at both types of electrodes followed the predictions of the theory for ultramicroelectrode arrays. At the two types of surfaces that were prepared, apparent electrochemical rate constants of ferricyanide and ascorbate were different. The resulting changes in the apparent rate constants of redox couples such as ferricyanide and ascorbate as a function of surface structure suggest that at TTF-TCNQ control over reactivity can be achieved through structural manipulation.