期刊
CHEMICAL PHYSICS LETTERS
卷 493, 期 1-3, 页码 67-71出版社
ELSEVIER
DOI: 10.1016/j.cplett.2010.04.071
关键词
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资金
- Wallonie-Bruxelles International
- Fonds de la Recherche Scientfique
- Ministere Francais des Affaires Etrangeres et Europeennes
- Ministere de l'Enseignement Superieur et de la Recherche
- FNRS-FRFC
- Loterie Nationale
- FUNDP
Using an ab initio approach taking into account environmental effects, we investigate the first absorption band of an important quinoidic dye, namely naphthazarin (5,8-dihydroxy-1,4-naphthoquinone). Several aspects have been considered in order to unravel the origin of the specific shape of this band: multiple absorptions, aggregation, presence of a tautomers, and vibronic couplings. It turns out that Time-Dependent Density Functional Theory (TD-DFT) is able to reproduce accurately the shape of the absorption spectra of naphthazarin if the latter effect is considered. The relative performances of a global, PBE0, and a range-separated, CAM-B3LYP, hybrids are also discussed in this framework. (C) 2010 Elsevier B.V. All rights reserved.
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