Photoinduced Electron Transfer Systems of Fullerene Carboxylic Acids Adsorbed on TiO_2 Nanoparticles

摘要

Fullerenes show excellent electron acceptor abilities in their excited states.A quite large number of papers have reported photoinduced electron transfer processes by employing various experimental techniques including laser flash photolysis method.In order to utilize the generated radical ions in the electron transfer processes as charges of the light-energy conversion systems,several models have been demonstrated.In the present paper,we report photoinduced electron transfer systems of two types of fullerene carboxylic acids adsorbed on TiO_2 nanoparticles,which are expected to accept electrons from the fullerene radical anions generated by intermolecular electron transfer process with electron donor in the solution: The accepted electron can be regard as a carrier in the light-energy conversion systems.