Exciton equilibration induced by phonons: Theory and application to PS II reaction centers
Exciton equilibration induced by phonons: Theory and application to PS II reaction centers
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DOI：
10.1021/jp9634058
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发表时间：
1997-09-11
影响因子：
3.3
通讯作者：
Klug, DR
中科院分区：
文献类型：
--
作者：
Leegwater, JA;Durrant, JR;Klug, DR
在本文中，我们比较计算的激发能转移率内的反应中心的光系统II，瞬态吸收测量相同的动力学。我们应用的理论是基于激子-声子相互作用相当弱的假设。这样我们就可以研究激子相干性的影响以及激子耦合系统向热平衡的弛豫。该理论正确地预测了实验观察到的两个简并态之间的转移率在680 nm附近和红色和蓝色电子状态之间的转移的差异。
In this paper we compare calculations of the rates of excitation energy transfer within reaction center of photosystem II, with transient absorption measurements of the same dynamics. The theory that we apply is based on the assumption that exciton-phonon interaction is fairly weak. In this way we can study the effect of exciton coherence as well as the relaxation toward thermal equilibrium of an excitonically coupled system. The theory correctly predicts the experimentally observed differences in rates for transfer between two degenerate states in the vicinity of 680 nm and transfer between red and blue electronic states.