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题名: Ferntosecond Fluorescence Dynamics of Zinc Biphenylporphine in Nanocrystalline TiO2 Films: Evidence for Interfacial Electron Transfer Through Space
作者: Lu, Liyang;Chang, Chih-Wei;Lin, Ching-Yao;Diau, Eric Wei-Guang
贡献者: 化學系
日期: 2006-12
上传时间: 2013-02-05T02:21:15Z
出版者: Elsevier
摘要: The femtosecond fluorescence dynamics of zinc biphenylporphine (ZnBPP) were investigated in solution and in two solid-state environments – ZnBPP/glass and ZnBPP/TiO2 – with S2 excitation (λex = 410 nm and λem = 630 nm). Our results indicate that the transient in solution involves a persistent component that becomes completely quenched in thin-film samples; for solid films at least three decay coefficients are required to fit the transients. For ZnBPP/TiO2 films, the fluorescence was quenched significantly through J-type aggregation and interfacial electron transfer (IET) through space. Photocurrent measurements were also performed to confirm the existence of IET through space between ZnBPP molecules and TiO2 nanoparticles.
關聯: Chemical Physics Letters, 432(4-6): 452-456
显示于类别:[化學系] 期刊論文


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