Interprétation des Profils d'Excitation Obtenus par Raman de Résonance des Modes de Vibration de la Diéthylcyanine
| Autor: | M. T. Forel, T. Mejean, J. C. Rayez |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Absorption spectroscopy
Scattering Chemistry Analytical chemistry Polarization (waves) Molecular electronic transition Spectral line Vibration symbols.namesake Physics::Atomic and Molecular Clusters symbols General Materials Science Physics::Chemical Physics Atomic physics Raman spectroscopy Spectroscopy Excitation |
| Zdroj: | Journal of Raman Spectroscopy. 9:125-129 |
| ISSN: | 0377-0486 |
| DOI: | 10.1002/jrs.1250090211 |
| Popis: | The excitation profiles of several vibrational Raman bands of diethylcyanine are examined where the exictation is applied to the first electronic transition. In order to analyse these profiles, firstly, a study of the electronic spectrum is carried out: the symmetry of the first electronic state is determined from an experimental approach (polarization of vibrational and electronic spectra) and from a theoretical approach (Hartree-Fock semiempirical calculations); secondly, the vibration excitation profile located at 1368 cm −1 is analysed. The parameters of this vibration (1368 cm−1) and the mechanism of the scattering are obtained with the help of Raman and absorption spectra. A comparison between the scattered intensity and the 1368 cm−1 vibration intensity allows the studies of excitation profiles of the other vibrations. |
| Databáze: | OpenAIRE |
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