INFLUENCE OF MOLECULAR-REORIENTATION ON ELECTRONIC-ENERGY TRANSFER BETWEEN A PAIR OF MOBILE CHROMOPHORES - THE STOCHASTIC LIOVILLE EQUATION COMBINED WITH BROWNIAN DYNAMIC SIMULATION TECHNIQUES

被引:23
作者
FEDCHENIA, I [1 ]
WESTLUND, PO [1 ]
机构
[1] UMEA UNIV,DEPT PHYS CHEM,S-90187 UMEA,SWEDEN
来源
PHYSICAL REVIEW E | 1994年 / 50卷 / 01期
关键词
D O I
10.1103/PhysRevE.50.555
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
An algorithm is developed in order to solve the stochastic Liouville equation describing energy transfer between a donor-donor pair of reorienting chromophores. The algorithm requires the fluctuating part of the Liouville equation in the form of trajectories. In this particular case the molecular reorientation of the chromophores was simulated by means of a Brownian dynamic simulation technique where each of the two molecules are allowed to undergo a restricted rotational diffusion in a cone potential. Numerical results are presented for the correlation function [chi(t)chi(0)], representing the probability that the initially excited donor still is excited at a later time t. Results are given for the weak or Forster regime and for a simple case in the strong or slow motion regime. The time resolved fluorescence anisotropy r (t) is also calculated for different molecular reorientational rates and cone potentials.
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页码:555 / 565
页数:11
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