期刊
CHEMICAL PHYSICS
卷 335, 期 2-3, 页码 155-163出版社
ELSEVIER
DOI: 10.1016/j.chemphys.2007.04.007
关键词
vibronic coupling; dimer; strong-coupling approximation
The problem of linear vibronic coupling in model dimer is revisited with the objective of testing a version of the strong vibronic-coupling approximation that is recently used in crystal-optics applications. It is shown that in the limit of strong intermolecular resonance interaction (intense electronic transitions) this approximation fails in a spectacular way, predicting a set of artefact absorption bands. The consequences of this finding for the interpretation of the absorption spectra of oligothiophene crystals are discussed. (C) 2007 Elsevier B.V. All rights reserved.
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