A Tiny Excited‐State Barrier Can Induce a Multiexponential Decay of the Retinal Chromophore: A Quantum Dynamics Investigation | Zendy

Olivucci Massimo | Zendy; Lami Alessandro | Zendy; Santoro Fabrizio | Zendy

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A Tiny Excited‐State Barrier Can Induce a Multiexponential Decay of the Retinal Chromophore: A Quantum Dynamics Investigation

Author(s) -

Olivucci Massimo,

Lami Alessandro,

Santoro Fabrizio

Publication year - 2005

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200501236

Subject(s) - conical intersection , excited state , chromophore , quantum , retinal , wave packet , quantum zeno effect , chemistry , ridge , physics , molecular physics , chemical physics , atomic physics , quantum mechanics , photochemistry , quantum dissipation , biochemistry , paleontology , biology

Excitement over something small : The protonated Schiff base of retinal photoisomerizes on an excited‐state hypersurface (S 1 ) that connects the Franck–Condon (FC) point via a flat valley centered on a planar structure (SP) to a conical intersection (CI; see picture). Wave‐packet (gray hat) quantum dynamics shows that the depletion of the S 1 population switches from mono‐ to biexponential when a small ridge (dotted line) between SP and CI is present.

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