Exciton delocalization in the light-harvesting LH2 complex of photosynthetic purple bacteria

被引：11
|
作者：
Dracheva, TV [1 ]
Novoderezhkin, VI [1 ]
Razjivin, AP [1 ]
机构：
[1] MOSCOW MV LOMONOSOV STATE UNIV,AN BELOZERSKY INST PHYSICOCHEM BIOL,DEPT PHOTOSYNTH,MOSCOW 119899,RUSSIA
来源：
PHOTOCHEMISTRY AND PHOTOBIOLOGY | 1997年 / 66卷 / 05期
关键词：
D O I：
10.1111/j.1751-1097.1997.tb03196.x
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Absorption and circular dichroism spectra for both long-wavelength bands of the antenna LH2 complex from photosynthetic purple bacteria have been calculated. Calculations were performed taking into account resonant interactions between all 27 bacteriochlorophyll (BChl) molecules for different values of site inhomogeneity. The exciton delocalization length within BChl800 and BChl850 rings was estimated on the basis of calculated exciton wavefunctions for different temperatures and site inhomogeneity values. The relationship between anomalously high bleaching values in pump-probe spectra and the exciton delocalization length is discussed.
引用
收藏
页码：605 / 610
页数：6
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