Composite films of a meso-(tetramethylpyridinium)porphyrin (TMPyP) hybrid incorporated in mesoporoussilica (MPS) and cast on a methyl viologen (MV2+)/titania nanosheet hybrid were synthesized and a light-induced charge separation between the two could be observed. These composite thin films were able toinitiate a one-electron reduction of the MV2+ ions accompanied by the simultaneous decomposition of theTMPyP organic dye within the mesoporous silica channels.
