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NCUEIR > College of Science > Department of Chemistry > Periodical Articles > Item 987654321/15463

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/15463

Title:	Ferntosecond Fluorescence Dynamics of Zinc Biphenylporphine in Nanocrystalline TiO2 Films: Evidence for Interfacial Electron Transfer Through Space
Authors:	Lu, Liyang;Chang, Chih-Wei;Lin, Ching-Yao;Diau, Eric Wei-Guang
Contributors:	化學系
Date:	2006-12
Issue Date:	2013-02-05T02:21:15Z
Publisher:	Elsevier
Abstract:	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.
Relation:	Chemical Physics Letters, 432(4-6): 452-456
Appears in Collections:	[Department of Chemistry] Periodical Articles

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