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A. S. Belov, V. V. Eryomin
The
influence of light-harvesting antennas architecture on the efficiency and rate
of energy transfer: the probability analysis
Abstract
The high efficiency of natural
light-harvesting systems is based on the optimal organization of various parts
of photosynthetic antenna – carotenoids and porphyrins. The rate and efficiency
of energy transfer inside the antenna and between antenna and reaction center
were studied using probability analysis. The dependence of rate and efficiency
on antenna architecture was displayed. In the most effective antennas the
maximum possible number of photosensitive elements directly contact to the
reaction center, and the interaction between the elements is small. The
efficiency of various types of antennas reduces in the following order:
parallel, ring, spherical, cluster, sequential. The closed-form expressions for
the average length of transfer route and the fraction of energy received by
reaction center were derived for all considered types of antennas. The spatial
arrangement photosensitive elements and the resistance of antenna to damage of
individual elements were taken into account.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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