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• W2034883355 endingPage "10218" @default.
• W2034883355 startingPage "10211" @default.
• W2034883355 abstract "The photodynamics along the main decay paths of thymine after excitation to the lowest π,π* state have been studied with MS-CASPT2 calculations and semiclassical CASSCF dynamics calculations including a surface hopping algorithm. The static calculations show that there are two decay paths from the Franck−Condon structure that lead to a conical intersection with the ground state. The first path goes directly to the intersection, while the second one is indirect and involves a minimum of the π,π* state, a small barrier, and a crossing between the π,π* and n,π* states. From the static calculations, both paths have similar slopes. The dynamics calculations along the indirect path show that, after the barrier, part of the trajectories are funneled to the intersection with the ground state, where they are efficiently quenched to the ground state. The remaining trajectories populate the n,π* state. They are also quenched to the ground state in less than 1 ps, but the static calculations show that the decay rate of the n,π* state is largely overestimated at the CASSCF level used for the dynamics. Overall, these results suggest that both direct and indirect paths contribute to the subpicosecond decay components found experimentally. The indirect path also provides a way for fast population of the n,π* state, which will account for the experimental picosecond decay component." @default.
• W2034883355 created "2016-06-24" @default.
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• W2034883355 date "2009-09-01" @default.
• W2034883355 modified "2023-10-15" @default.
• W2034883355 title "Photophysics of the π,π* and n,π* States of Thymine: MS-CASPT2 Minimum-Energy Paths and CASSCF on-the-Fly Dynamics" @default.
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• W2034883355 doi "https://doi.org/10.1021/jp905303g" @default.
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• W2034883355 hasPublicationYear "2009" @default.
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