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Resonance energy transfer from a fluorescent dye to a metal nanoparticle

Bhowmick, Somnath and Saini, Sangeeta and Shenoy, Vijay. B. and Bagchi, Biman (2006) Resonance energy transfer from a fluorescent dye to a metal nanoparticle. The Journal of Chemical Physics, 125 (18). pp. 181102-1.

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A quantum mechanical theory of the rate of excitation energy transfer from a fluorescent dye molecule to the surface plasmonic modes of a spherical metal nanoparticle is presented. The theory predicts the distance dependence of the transfer rate to vary as 1/dsigma, with sigma=3–4 at intermediate distances, in partial agreement with the recent experimental results. Förster's 1/d6 dependence is recovered at large separations. The predicted rate exhibits nontrivial nanoparticle size dependence, ultimately going over to an asymptotic, a3 size dependence. Unlike in conventional fluorescence resonance energy transfer, the orientational factor is found to vary between 1 and 4.

Item Type:Article
Subjects:Material Science > Nanochemistry
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
ID Code:3847
Deposited By:JNCASR
Deposited On:27 Jan 2009 09:56
Last Modified:18 Apr 2009 11:40

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