Ultrafast Energy Transfer in Artificial Antenna Molecule Measured by Transient Fluorescence Spectroscopy |
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| Authors: | Hai-long Chen Yu-xiang Weng Xi-you Li |
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| Affiliation: | 1.Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing National Laboratory of Condensed Matter Physics, Beijing 100190, China2.Department of Chemistry, Shandong University, Ji’nan 250100, China |
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| Abstract: | 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 ex-perimental 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 en-ergy transfer was observed directly with a time constant of about 0.82 ps, in good agreement with the previous result. |
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| Keywords: | Noncollinear optical parametric amplifier Transient fluorescence Perylenete-tracarboxylic diimide trimer Artificial antenna molecule Energy transfer |
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