Abstract
We present exact expressions for the ensemble averaged decay of the excitation of a donor molecule, due to the energy transfer via anisotropic dipolar interactions to acceptors distributed randomly on a lattice. We compare in two special cases the approximate, Förster-type expressions, valid for low acceptor concentrations and long times, with the exact results: in the case of a completely random angular distribution and in case of a preferential orientation. The connection to the decay law for isotropic interactions [Blumen and Manz, J. Chem. Phys. 71, 4694 (1979)] is also presented. Whereas the approximate expressions show similar qualitative behavior in all cases, their regions of validity (compared to the exact results) differ considerably; the difference is especially large for the decay due to acceptors which are randomly distributed on the lattice but are orientationally ordered.
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Dates
Type | When |
---|---|
Created | 22 years, 6 months ago (Feb. 28, 2003, 10:46 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 9, 2024, 5:39 p.m.) |
Indexed | 1 year, 6 months ago (Feb. 10, 2024, 10:21 a.m.) |
Issued | 44 years, 2 months ago (June 15, 1981) |
Published | 44 years, 2 months ago (June 15, 1981) |
Published Print | 44 years, 2 months ago (June 15, 1981) |
@article{Blumen_1981, title={On the anisotropic energy transfer to random acceptors}, volume={74}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.441104}, DOI={10.1063/1.441104}, number={12}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Blumen, Alexander}, year={1981}, month=jun, pages={6926–6933} }