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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.
Moscow University Chemistry Bulletin.
2008, Vol. 49, No. 4, P. 219
   

Copyright (C) Chemistry Dept., Moscow State University, 2002
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