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General Approach to Coupled Reactive Smoluchowski Equations: Integration and Application of DVR and Generalized Coordinate Methods to Diffusive Problems

机译:耦合反应性Smoluchowski方程的一般方法:DVR和扩散问题的广义坐标法的集成和应用

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摘要

A new and more general approach to diffusion problems with the inclusion of reactivity among different coupled diffusional states is rationalized and presented. The integration of our previous developments in such field [Phys. Chem. Chem. Phys., 2015, >17, 17362-17374; J. Chem. Theory Comput., 2016, >12, 3482-3490] are implemented in a software package tool allowing the generic user to set up and run diffusional calculations with very low efforts. We show the applicability of the whole framework to a generic diffusional case of chemical interest that is the study case of (N, N-dimethylamino) benzonitrile (DMABN) fluorescence, whose excited state undergoes twisted intramolecular charge transfer (TICT) relaxation. The population dynamics of the excited state coupled to the ground state is followed, and fluorescence decay spectrum is calculated. The theoretical and numerical background here presented is robust and general enough to complement a wide number of diffusional problems of current interest.
机译:合理化并提出了一种新的,更通用的解决扩散问题的方法,其中包括了不同耦合扩散状态之间的反应性。整合了我们以前在该领域的发展[Phys。化学化学物理学报,2015年,> 17 ,17362-17374; J.化学Theory Comput。,2016,> 12 ,3482-3490]在软件包工具中实施,允许一般用户以非常低的努力来设置和运行扩散计算。我们显示整个框架适用于化学感兴趣的一般扩散情况,这是(N,N-二甲基氨基)苄腈(DMABN)荧光的研究案例,其激发态经历了扭曲的分子内电荷转移(TICT)弛豫。跟踪与基态耦合的激发态的种群动态,并计算荧光衰减光谱。这里介绍的理论和数值背景是足够强大和通用的,可以补充当前关注的大量扩散问题。

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