Ultra-short excited state lifetimes

From a theoretical point of view, the ultra-short excited state lifetimes observed for canonical structures have been attributed to the existence of easily accessible conical intersections between the excited state and the ground state efficiently promoting nonradiative decay [10,25, 30, 36,44,45, 53, 58, 60, 74,75, 85, 87, 102], Accurate prediction of excited state properties still presents a major challenge to... 

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