Light Induced Electron Transfer and Charge Separation of Porphyrin Compounds for Photoelectric Conversion

Abstract

A series of artificial photosynthesis porphyrin compounds consisting of electron donor and electron acceptor (compounds 1-6) were synthesized. Their spectroscopic behaviors in solution were investigated and the synthetic molecular devices were prepared with these molecules by using LB technique. It was indicated that multistep electron transfer and charge separation for these compounds actually occur, which is of great advantage to their photoelectric conversion. An efficient energy transfer process takes place for compound 6.A mechanism involving photoinduced electron transfer and multistep charge separation for these compounds was suggested. With only one monolayer of tetrad 1 LB film on the surface of Sn0 2 conductive glass, high photo-driven voltage and current were obtained, 641