Effect of the Coupling with Frenkel States on the Electroaborption Signal of Charge Transfer Excitons
作者:
Michal Slawik,
Piotr Petelenz,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 324,
issue 1
页码: 205-210
ISSN:1058-725X
年代: 1998
DOI:10.1080/10587259808047156
出版商: Taylor & Francis Group
关键词: electroabsorption;Frenkel excitons;charge transfer states;poliacenes;fullerene
数据来源: Taylor
摘要:
The recently proposed nearest-neighbour model of the coupling between the Frenkel and charge transfer (CT) excitations of a molecular crystal, successfully applied for the calculation of the electroabsorption (EA) spectra of polyacenes and fullerene, is applied to probe the influence of different intramolecular excited states on the EA signal in the CT energy range. The study highlights the pre-eminent role of Frenkel excitons that are energetically close to the CT manifold, even if they are inactive in conventional absorption spectroscopy. The high-energy intense excitons are found to have a lesser effect. The study suggests EA spectroscopy as a potential tool to detect and locate some of the absorption-inactive intramolecular excitations.
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