Energy transfer between two aggregates in light-harvesting complexes

doi:10.1088/1674-1056/22/11/117102

中国物理B ›› 2013, Vol. 22 ›› Issue (11): 117102-117102.doi: 10.1088/1674-1056/22/11/117102

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Energy transfer between two aggregates in light-harvesting complexes

汪小莲, 李宏荣, 张沛, 李福利

Department of Applied Physics, Xian Jiaotong University, Xian 710049, China

收稿日期:2013-04-27 修回日期:2013-05-27 出版日期:2013-09-28 发布日期:2013-09-28
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11174233) and the National Basic Research Program of China (Grant No. 2011CB311807).

Energy transfer between two aggregates in light-harvesting complexes

Wang Xiao-Lian (汪小莲), Li Hong-Rong (李宏荣), Zhang Pei (张沛), Li Fu-Li (李福利)

Department of Applied Physics, Xian Jiaotong University, Xian 710049, China

Received:2013-04-27 Revised:2013-05-27 Online:2013-09-28 Published:2013-09-28
Contact: Li Hong-Rong E-mail:hrli@mail.xjtu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11174233) and the National Basic Research Program of China (Grant No. 2011CB311807).

摘要/Abstract

摘要： Energy transfer processes between two aggregates in a coupled chromophoric-pigment (protein) system are studied via the standard master equation approach. Each pigment of the two aggregates is modeled as a two-level system. The excitation energy is assumed to be transferred from the donor aggregate to the acceptor aggregate. The model can be used to theoretically simulate many aspects of light-harvesting complexes (LHCs). By applying the real bio-parameters of photosynthesis, we numerically investigate the efficiency of energy transfer (EET) between the two aggregates in terms of some factors, e.g., the initial coherence of the donor aggregate, the coupling strengthes between the two aggregates and between different pigments, and the effects of noise from the environment. Our results provide evidence for that the actual numbers of pigments in the chromophoric rings of LHCs should be the optimum parameters for a high EET. We also give a detailed analysis of the effects of noise on the EET.

关键词: light-harvesting complexes, energy transfer, decoherent effects

Abstract: Energy transfer processes between two aggregates in a coupled chromophoric-pigment (protein) system are studied via the standard master equation approach. Each pigment of the two aggregates is modeled as a two-level system. The excitation energy is assumed to be transferred from the donor aggregate to the acceptor aggregate. The model can be used to theoretically simulate many aspects of light-harvesting complexes (LHCs). By applying the real bio-parameters of photosynthesis, we numerically investigate the efficiency of energy transfer (EET) between the two aggregates in terms of some factors, e.g., the initial coherence of the donor aggregate, the coupling strengthes between the two aggregates and between different pigments, and the effects of noise from the environment. Our results provide evidence for that the actual numbers of pigments in the chromophoric rings of LHCs should be the optimum parameters for a high EET. We also give a detailed analysis of the effects of noise on the EET.

Key words: light-harvesting complexes, energy transfer, decoherent effects

中图分类号: (Excitons and related phenomena)

71.35.-y

71.23.An (Theories and models; localized states)

汪小莲, 李宏荣, 张沛, 李福利. Energy transfer between two aggregates in light-harvesting complexes[J]. 中国物理B, 2013, 22(11): 117102-117102.

Wang Xiao-Lian (汪小莲), Li Hong-Rong (李宏荣), Zhang Pei (张沛), Li Fu-Li (李福利). Energy transfer between two aggregates in light-harvesting complexes[J]. Chin. Phys. B, 2013, 22(11): 117102-117102.

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Energy transfer between two aggregates in light-harvesting complexes

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