THE DEVELOPMENT OF TWO NOVEL SPECTROELECTROCHEMICAL TECHNIQUES

Two novel spectroelectrochemical techniques are discussed. The use of glancing incidence angle for reflection spectroelectrochemistry results in an enhancement of the optical absorbance by greater than a factor of 100. The absorbance vs. time profiles at various angles are presented. In the second technique, using a beam of light parallel to the plane of the electrode, the diffusion profile of an electrogenerated species can be investigated. A slit (3-18 (mu)m wide), placed in the light beam after the electrode, was used to sample various distances from the electrode. Concentration vs. time and concentration vs. distance profiles are plotted and compared with theoretical curves based on Fick's Law of diffusion.