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Proceedings Paper

Temperature shifts of phenanthrene S2←S0 spectrum in apolar solvents and in water
Author(s): Igor A. Ar'ev; Nikolai I. Lebovka
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Paper Abstract

Phenanthrene, a three ring aromatic hydrocarbon, is used as a model substance for study of intermolecular interactions in dilute solutions of organic solvents and water by spectroscopic method. Temperature dependencies of shift of the S2 ←SO spectrum of phenanthrene dissolved in apolar solvents and in liquid water are studied in this work. The spectroscopic data are used for analysis of the cavity radius R for phenanthrene molecule in solvents. It is shown that the value of R increases with temperature in organic solvents. In contrast, for water solution, the value ofR initially grows with temperature increase (in the interval of 273.3-296 K), but becomes constant at higher temperatures. The changes of water structure in the neighbourhood of a phenanthrene molecule and probable hypothesis about causes of R value constancy in high-temperature region are discussed. Conclusion about strengthening ofthe water structure in an aqueous cage with phenanthrene molecule inside is done.

Paper Details

Date Published: 20 July 2004
PDF: 6 pages
Proc. SPIE 5507, XVI International Conference on Spectroscopy of Molecules and Crystals, (20 July 2004); doi: 10.1117/12.569592
Show Author Affiliations
Igor A. Ar'ev, Institute of Colloid and Water Chemistry (Ukraine)
Nikolai I. Lebovka, Institute of Biocolloid Chemistry (Ukraine)

Published in SPIE Proceedings Vol. 5507:
XVI International Conference on Spectroscopy of Molecules and Crystals
Galyna O. Puchkovska; Tatiana A. Gavrilko; Olexandr I. Lizengevich, Editor(s)

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