Abstract
Photo-modulation voltammetry was applied to detecting the photolysis of tetraphenylborate (TPhB-) at a water/1,2-dichloroethane (DCE) interface by using a He-Cd laser emitting a beam with a major 325-nm line and minor lines of shorter wavelengths. When the interface was irradiated from the water-phase side, a new wave appeared in the photo-modulation voltammogram, suggesting that TPhB- was photolyzed and the anionic product was transferred across the interface. The concentration dependence of the photocurrents was successfully explained by a theory based on the photolytic process at the interface.
