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On the photo‐activation of the S 0 → S 1 transition in polyenes
Author(s) -
Catalán Javier
Publication year - 2019
Publication title -
journal of physical organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.325
H-Index - 66
eISSN - 1099-1395
pISSN - 0894-3230
DOI - 10.1002/poc.3933
Subject(s) - chemistry , diphenylhexatriene , excited state , molecule , molecular electronic transition , converse , dipole , excited electronic state , absorption (acoustics) , atomic electron transition , two photon absorption , photochemistry , atomic physics , quantum mechanics , physics , fluorescence anisotropy , laser , optics , organic chemistry , spectral line , biochemistry , geometry , mathematics , membrane
Abstract The evidence provided in this work allows us to conclude that the electronic transition S 0 → S 1 either for the diphenylhexatriene molecule or for the diphenyloctatetraene molecule is dipole allowed and induced by one‐photon absorption. Consequently, the model to explain the photophysics of these polyenes does not need the existence of an underlying 2 1 A g excited electronic state, to the converse of what Hudson and Kohler proposed, that the transition S 0 → S 1 must be induced by two‐photon absorption.