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J Phys Chem B. 2007 Jun 28;111(25):6978-82. Epub 2007 Jun 6.

How solvent controls electronic energy transfer and light harvesting.

Abstract

The way that solvent (or host medium) modifies the rate of electronic energy transfer (EET) has eluded researchers for decades. By applying quantum chemical methods that account for the way solvent (in general any host medium including liquid, solid, or protein, etc.) responds to the interaction between transition densities, we quantify the solvent screening. We find that it attains a striking exponential attenuation at separations less than about 20 A, thus interpolating between the limits of no apparent screening and a significant attenuation of the EET rate. That observation reveals a previously unidentified contribution to the distance dependence of the EET rate.

PMID:
17550286
DOI:
10.1021/jp072540p
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