期刊
JOURNAL OF LUMINESCENCE
卷 102, 期 -, 页码 802-806出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0022-2313(02)00645-2
关键词
photosynthesis; chlorosome; Frenkel excitons; energy transport; colored noise
类别
The optical line shape of molecular ring aggregates with 18 molecular units, modeling bacteria photo-synthetic light harvesting systems, is investigated theoretically, The molecular units are described by two-level systems with an average excitation energy epsilon and interacting with each other through nearest-neighbor interaction. Furthermore, quasi-static and dynamic fluctuations of the local excitation energies are taken into account simulating slow motions of the protein backbone and fast molecular vibrations, respectively. The fluctuations are described by colored dichotomic Markov processes with exponentially decaying correlation functions with small (lambda(s)) and large (lambda) decay constants, respectively. The optical line shape is discussed in dependence of the model parameters including a possible elliptical deformation. Furthermore we investigate the coupled coherent and incoherent energy transport in chlorosomes. (C) 2002 Elsevier Science B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据