Site inhomogeneity and exciton delocalization in the photosynthetic antenna

被引：13

作者：

Dracheva, TV ^{[1
]}

Novoderezhkin, VI ^{[1
]}

Razjivin, AP ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,SCI RES CTR TECHNOL LASERS,TROITSK 142092,MOSCOW REG,RUSSIA

来源：

PHOTOSYNTHESIS RESEARCH | 1996年 / 49卷 / 03期

关键词：

exciton; light-harvesting antenna; primary processes; bacterial photosynthesis; site inhomogeneity;

D O I：

10.1007/BF00034788

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The influence of energy disorder on exciton states of molecular aggregates (the dimer and the circular aggregate) was analyzed. The dipole strength and inhomogeneous line shapes of exciton states were calculated by means of numerical diagonalization of Hamiltonian with diagonal energy disorder without intersite correlation. The disorder degree corresponding to destruction of coherent exciton states was estimated. The circular aggregates were treated as a model of light-harvesting antenna structures of photosynthetic bacteria. It was concluded that the site inhomogeneity typical for LH1 and LH2 complexes of purple bacteria cannot significantly influence the exciton delocalization over the whole antenna.

引用

页码：269 / 276

页数：8

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