Waldl M, Oppel M, González L. Controlling the Excited-State Dynamics of Nuclear Spin Isomers Using the Dynamic Stark Effect.
J Phys Chem A 2016;
120:4907-14. [PMID:
26840424 DOI:
10.1021/acs.jpca.5b12542]
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Abstract
Stark control of chemical reactions uses intense laser pulses to distort the potential energy surfaces of a molecule, thus opening new chemical pathways. We use the concept of Stark shifts to convert a local minimum into a local maximum of the potential energy surface, triggering constructive and destructive wave-packet interferences, which then induce different dynamics on nuclear spin isomers in the electronically excited state of a quinodimethane derivative. Model quantum-dynamical simulations on reduced dimensionality using optimized ultrashort laser pulses demonstrate a difference of the excited-state dynamics of two sets of nuclear spin isomers, which ultimately can be used to discriminate between these isomers.
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