Abstract
Abstract Photoinduced ternary electron transfer reactions have been demonstrated in the system of perylene(Pe)-1,4-dicyanobenzene(DCB)-N-vinylcarbazole(VCZ) in acetone. Photoexcited perylene was recycled via two successive electron transfer reactions while VCZ-cyclodimer and/or -polymer were obtained in good yields. Quantum yields for VCZ-cyclodimer and -polymer formation were larger in the electron transfer sensitization system in comparison with the other reaction systems such as in the Pe–VCZ or the VCZ–DCB system. The photocatalytic effect of the electron transfer sensitization was clearly confirmed in the present system, by estimating the overall sensitizer efficiency as over 8000 although chain propagation steps of VCZ cation radical are involved in the present reaction processes.
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