Vibronic structures of the ground and first excited electronic states of aromatic hydrocarbons cooled in a supersonic jet

N. A. Borisevich; L. B. Vodovatov; G. G. D'jachenko; V. A. Petukhov; M. A. Semenov

doi:10.1117/12.267758

3 March 1997 Vibronic structures of the ground and first excited electronic states of aromatic hydrocarbons cooled in a supersonic jet

N. A. Borisevich, L. B. Vodovatov, G. G. D'jachenko, V. A. Petukhov, M. A. Semenov

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Proceedings Volume 3090, 12th Symposium and School on High-Resolution Molecular Spectroscopy; (1997) https://doi.org/10.1117/12.267758
Event: 12th Symposium and School on High Resolution Molecular Spectroscopy, 1996, St. Petersburg, Russian Federation

Abstract

The fluorescence excitation and dispersed fluorescence spectra of pyrene and acenaphthene molecules cooled in a supersonic jet have been obtained. Based on the K. Ohno MO/8 model, a new method for calculating frequencies of the in- plane vibrations in the excited electronic states of polycyclic aromatic hydrocarbons is developed. It is shown, that for investigated molecules the prediction accuracy of the vibration frequencies in the ground and first excited electronic states is about 20 cm^-1 without modification of initial parameters, used in the MO/8 model.

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N. A. Borisevich, L. B. Vodovatov, G. G. D'jachenko, V. A. Petukhov, and M. A. Semenov "Vibronic structures of the ground and first excited electronic states of aromatic hydrocarbons cooled in a supersonic jet", Proc. SPIE 3090, 12th Symposium and School on High-Resolution Molecular Spectroscopy, (3 March 1997); https://doi.org/10.1117/12.267758

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