Electronic energy transfer in liquids. The effect of molecular dynamics
Electronic energy transfer in liquids. The effect of molecular dynamics
复制标题
液体中的电子能量传输。
DOI：
10.1063/1.465850
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发表时间：
1993
影响因子：
4.4
通讯作者：
H. Wennerström
中科院分区：
文献类型：
--
作者：
P. Westlund;H. Wennerström
一个刘维尔形式主义已被开发用于治疗能量转移过程中的相同的概念框架内的其他松弛过程。Forster的理论描述了一对固定荧光分子之间的能量转移，该理论已被推广到包括静态、中间和快速动态区域的分子动力学效应。福斯特的主方程的激发人口是来自刘维形式主义，我们到达在物理模型内的有效性的适当标准。推导了含有成对相互作用发色团的大分子体系的荧光各向异性的封闭形式表达式，其中一个发色团经历两态构象变化。推导出的表达式是有效的，而无需假设非辐射态和构象动力学是解耦的。结果表明，当能量传递和构象变化发生在同一时间尺度上时，荧光衰减时间各不相同。
A Liouville formalism has been developed for treating energy transfer processes within the same conceptual framework as other relaxation processes. The theory of Forster, describing energy transfer between a pair of immobile fluorescent molecules has been generalized to include the effects of molecular dynamics the static, intermediate and fast dynamic regimes. Forster’s master equation of the excitation populations is derived from the Liouville formalism and we arrive at the proper criteria for its validity within the physical model. A closed form expression is derived for the fluorescence anisotropy of a macromolecular system containing pair of pairwise interacting chromophores where one of the chromophores undergoes a two state conformational change. The expression derived is valid without assuming that the nonradiative state and the conformation dynamic is uncoupled. It is shown that when energy transfer and conformational changes occur on the same time scale, the decay times of the fluorescence aniso...