Chinese Optics Letters, Volume. 7, Issue 7, 07646(2009)
Direct observation of the ultrafast energy transfer in a porphyrin and ruthenium dyad
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 photoexcitation of the [Ru(phen)2(ip)]2+ at 453 nm. 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 Forster energy-transfer theory.
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Han Shen, Hui Wang, Jie Liu, Yong Shen, Jinwang Huang, Liangnian Ji. Direct observation of the ultrafast energy transfer in a porphyrin and ruthenium dyad[J]. Chinese Optics Letters, 2009, 7(7): 07646
Received: Sep. 5, 2008
Accepted: --
Published Online: Jul. 24, 2009
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