A platinum electrode was coated with an organic membrane composed of poly(vinyl chloride) and spirobenzopyran to regulate the electrode potential by photoirradiation. The electrode potential shifted rapidly toward the positive direction upon UV light irradiation. When the light was switched off, the potential decayed gradually. Visible light irradiation accelerated the decay of the electrode potential. The results are discussed in relation to the photochemical reaction of a spirobenzopyran derivative in the membrane and the ionic distribution at the metal/membrane and membrane/solution interfaces.
ASJC Scopus subject areas
- 化学 (全般)