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Belov A. S., Eryomin V. V.
Quantum Dynamical Description of the
Dissipative Energy Transfer in Photosystems. 1. A Model of Interaction between
Chromophores and Protein in the Framework of the Redfield Theory
Abstract
Within the context of the Redfield
theory, a model, which describes disssipative dynamics of the excitation energy
transfer within native and artificial light-harvesting complexes, is proposed.
On basis of the dipole-dipole approximation for interaction between the
chromophores and the protein, an analytical expression for the elements of
Redfield tensor was obtained, which contains no fitting parameters. This
expression takes account of the spatial arrangement of the molecules, their
relative orientation and excitation energy, and also implies the dependence of
the dissipation rate on the temperature of the protein and its physical
properties.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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