Investigation of photoelectric conversion from an novel charge transfer compound of a hemicyanine dye containing zinc complex anion

A new type of charge transfer complex of a hemicyanine dye containing zinc complex anion: [(CH3)(2)NC6H4-CH = CH-C10H6NC18H37](2)Zn (dmit)(2)(where dm it = 4,5-dimercato-1, 3-dithiole-2-thione)(A(2)S) has been studied on its L B film property and photoelectric conversion from its LB film modified ITO electrode compared with a hemicyanine dye iodide: (CH3)(2)NC6H4-CH = CH-C10 H6NC18H37I (AI). The results show that the quantum yield of A(2)S is 1.8-fo ld increased in comparison with that for AI. This can be explained by the f act that when the conductive zinc complex anion is used to replace I- to fo rm hemicyanine complex, the LB film property can be improved and also the c harge separation of the hemicyanine dye become more effective, This kind of compound can be evaluated as a promising photoelectric conversion material .