Direct observation of the ultrafast energy transfer in a porphyrin and ruthenium dyad  

作　　者：沈涵 王惠 刘杰 沈勇 黄锦汪 计亮年 

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University [2]Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-Sen University

出　　处：《Chinese Optics Letters》2009年第7期646-649,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 60478013, 20571089,90608012);the Natural Science Foundation of Guangdong Province of China (No. 05101819);the National "973" Program of China (No. 2007CB815306)

摘　　要：The luminescence dynamics of a polypyridyl ruthenium II [Ru（phen）2（ip）]2＋ and 5,10,15,20- tetraphenylporphyrin （H2TPP） dyad have been measured by using time-resolved fluorescence spectroscopy. The transient luminescent spectra of the dyad show an ultrafast energy transfer within 300 ps after pho- toexcitation of the [Ru（phen）2（ip）]2＋ at 453 am. However, no energy transfer has been observed as the excitation wavelength is 400 nm, corresponding to the absorption peak of H2TPP. The origin of the energy transfer from [Ru（phen）2（ip）]2＋ to H2TPP has been analyzed according to the FSrster energy-transfer theory.The luminescence dynamics of a polypyridyl ruthenium II [Ru（phen）2（ip）]2＋ and 5,10,15,20- tetraphenylporphyrin （H2TPP） dyad have been measured by using time-resolved fluorescence spectroscopy. The transient luminescent spectra of the dyad show an ultrafast energy transfer within 300 ps after pho- toexcitation of the [Ru（phen）2（ip）]2＋ at 453 am. However, no energy transfer has been observed as the excitation wavelength is 400 nm, corresponding to the absorption peak of H2TPP. The origin of the energy transfer from [Ru（phen）2（ip）]2＋ to H2TPP has been analyzed according to the FSrster energy-transfer theory.

关 键 词：Fluorescence spectroscopy Luminescence PHOTOEXCITATION PORPHYRINS RUTHENIUM 

分 类 号：O433[机械工程—光学工程]