Abstract

Photoelectrochemical studies were carried out on [MnMoO2(NCS)(Ox)3(H2O)2] {Ox=8-quinolinol} complex in aqueous dimethylformamide medium in a Honda cell. The system developed a maximum potential of 335 mV when exposed to visible light at 30°C and was found to be reversible. The photogalvanic behaviour has been further investigated by varying the pH, temperature and photosensitizers. When a temperature difference between the illuminated and dark half-cells was maintained, the system generated 410 mV at 60°C. A solid-state galvanic cell, developed using the complex mixed with tetraethylammonium perchlorate (TEAP), showed a maximum voltage of 25 mV. A sandwich galvanic cell, constructed from transparent tin oxide-glass/complex/platinum, developed a maximum photovoltage of 88 mV when irradiated with a tungsten halogen lamp. Copyright © 2000 John Wiley & Sons, Ltd.

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