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Theoretical-computational modeling of charge transfer and intersystem crossing reactions in complex chemical systems

机译:复杂化学系统中电荷转移和系统间交叉反应的理论计算模型

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In this paper we present a theoretical-computational methodology specifically aimed at describing processes involving internal conversion or intersystem crossing, from atomistic (semiclassical) simulations and, hence, very suitable for treating complex atomic-molecular systems. The core of the presented approach is the evaluation of the diabatic perturbed energy surfaces of a portion of the whole system, treated at the quantum level and therefore preventively selected, in semi-classical interaction with the atomic-molecular environment. Subsequently, the estimation of the coupling between the diabatic surfaces and the inclusion of the obtained observables within a properly designed kinetic model allows the reconstruction of the whole phenomenology directly comparable to the experimental (typically kinetic) data. Application to two systems has demonstrated that the proposed approach can represent a valuable tool, somewhat complementary to other methods based on explicit quantum-dynamical approaches, for the theoretical-computational investigations of large and complex atomic-molecular systems.
机译:在本文中,我们提出了一种理论计算方法,专门用于描述涉及原子内(半经典)模拟的内部转换或系统间交叉的过程,因此非常适合处理复杂的原子分子系统。提出的方法的核心是对整个系统的一部分的非绝热扰动能量表面进行评估,该过程在量子水平上进行了处理,因此在与原子-分子环境的半经典相互作用中进行了预防性选择。随后,对非绝热表面之间的耦合以及将获得的观测值包含在适当设计的动力学模型中的估计,使得整个现象学的重建可直接与实验(通常是动力学)数据进行比较。在两个系统上的应用表明,对于大型和复杂的原子分子系统的理论计​​算研究,所提出的方法可以代表一种有价值的工具,与基于显式量子动力学方法的其他方法有所补充。

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