Ultrafast Energy Transfer in Artificial Antenna Molecule Measured by Transient Fluorescence Spectroscopy  

人工模拟捕光天线分子中超快能量转移的瞬态荧光测量

作　　者：陈海龙[1] 翁羽翔[1] 李希友[2] 

机构地区：[1]中国科学院物理研究所,北京100190 [2]山东大学化学与化工学院,济南250100

出　　处：《Chinese Journal of Chemical Physics》2011年第3期253-255,I0003,共4页化学物理学报（英文）

基　　金：This work was supported by the National Natural Science Foundation of China （No.20925313 and No.60438020）, the National Basic Research Program of China （No.2009CB929404）, and the Chinese Academy of Sciences Innovation Program （KJCX2-YW-W25）.

摘　　要：We have reported previously the ultrafast energy transfer process with a time constant of 0.8 ps from a monomeric to a dimeric subunit within a perylenetetracarboxylic diimide trimer, which was derived indirectly from a model fitting into the transient absorption experimental data. Here we present a direct ultrafast fluorescence quenching measurement by employing fs time-resolved transient fluorescence spectroscopy based on noncollinear optical parametric amplification technique. The rapid decay of the monomer＇s emission due to energy transfer was observed directly with a time constant of about 0.82 ps, in good agreement with the previous result.

关 键 词：Noncollinear optical parametric amplifier Transient fluorescence Perylenetetracarboxylic diimide trimer Artificial antenna molecule Energy transfer 

分 类 号：O[理学]