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Proceedings Paper

Laser spectroscopy of hydrogen-bonded complexes of carbazole with water cooled in supersonic jet
Author(s): N. A Borisevich; V. A. Povedailo; E. E. Tselesh; D. L. Yakovlev
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Paper Abstract

Rotational contours of bands of electron and vibronic transitions of the fluorescence excitation spectrum of jet-cooled carbazole complexes with one, two and three water molecules are studied. For the carbazole-(H2O)1 complex two bands separated at 0.57 cm-1 are registered at excitation of pure electron transition and other electron and vibronic transitions by radiation with a spectral width of 0.08 cm-1. This is caused by the tunnel effect. The intensities of the shifted low-frequency bands are three times as weak as the high-frequency ones because of different nuclear spin-statistical weights. Water molecules in carbazole-(H2O)2 and carbazole-(H2O)3 complexes are combined into a chain by the hydrogen bond. Both ends of this chain are also hydrogen-bonded with a carbazole molecule. There is the interchange of the axes IA and IB of the principal moments of inertia in the carbazole-(H2O)3 complex, as compared to the remaining considered complexes. This results in increasing the Q-branch intensity.

Paper Details

Date Published: 9 July 2007
PDF: 6 pages
Proc. SPIE 6727, ICONO 2007: Nonlinear Laser Spectroscopy and High-Precision Measurements; and Fundamentals of Laser Chemistry and Biophotonics, 67270R (9 July 2007); doi: 10.1117/12.752300
Show Author Affiliations
N. A Borisevich, Institute of Molecular and Atomic Physics (Belarus)
V. A. Povedailo, Institute of Molecular and Atomic Physics (Belarus)
E. E. Tselesh, Institute of Molecular and Atomic Physics (Belarus)
D. L. Yakovlev, Institute of Molecular and Atomic Physics (Belarus)


Published in SPIE Proceedings Vol. 6727:
ICONO 2007: Nonlinear Laser Spectroscopy and High-Precision Measurements; and Fundamentals of Laser Chemistry and Biophotonics

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