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M. G. Khrenova, A. V. Nemukhin, B. L. Grigorenko, A. A. Moskovsky
Optical transitions in light harvesting
complexes of the bacterial photosynthetic centers
Abstract
Geometry parameters of the model structure
of the bacterial photosynthetic center composed of the light harvesting antenna
complex, reaction center, lipid layers, solvent shells of water molecules are
optimized by using quantum mechanics – molecular mechanics methods, and optical
absorption spectra of bacteriochlorophyll in quantum subsystem are estimated.
It is shown that band positions in the clusters of pigments are shifted to the
red as compared to the spectra of individual bacteriochlorophyll molecules.
Key words: photosynthesis, light harvesting
complexes, bacteriochlorophyll, optical spectra.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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