Anomalous behavior of the fluorescence spectra of perylene in n-octane under pressure and temperature variations
- 1 November 2001
- journal article
- Published by Pleiades Publishing Ltd in Journal of Experimental and Theoretical Physics
- Vol. 93 (5) , 998-1003
- https://doi.org/10.1134/1.1427111
Abstract
Pressure-induced transformations of the vibronic spectra of perylene in n-octane were studied. An increase in pressure from normal to 10 kbar caused a sharp change in the multiplet structure of the spectra. An anomalous, almost linear temperature dependence of spectral line widths was observed in the temperature range 4.2–15 K. Both temperature and baric effects were explained in terms of the same model of a two-well adiabatic potential of impurity centers, which caused the appearance of low-frequency splittings in the ground and excited electronic level regions.Keywords
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