Methods of effective molecular size evaluation and temperature shifts of S1 S0 anthracene spectrum

Igor A. Ar'ev; Nikolai I. Lebovka

doi:10.1117/12.486667

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11 December 2002 Methods of effective molecular size evaluation and temperature shifts of S₁ S₀ anthracene spectrum

Igor A. Ar'ev, Nikolai I. Lebovka

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Proceedings Volume 4938, Selected Papers from the International Conference on Spectroscopy of Molecules and Crystals; (2002) https://doi.org/10.1117/12.486667
Event: XV International School on Spectroscopy of Molecules and Crystals, 2001, Chernivsti, Ukraine

Abstract

Three methods of effective molecular size evaluation originated from scaled particle theory (SPT) and a method proposed by Dejardin et al are checked by correlation analysis on internal consistency. It was shown that the Dejardin's method looks more attractive than SPT methods for estimation of the molecular radii r. Temperature dependence of r is analyzed from the viewpoint of SPT and compared with data of spectral shift experiments. Temperature shifts of S₁ S₂ spectrum of anthracene dissolved in different solvents are as example of such analysis. In accordance with SPT prediction the estimated values of r decrease with temperature increase only in approximation of neglecting of its out-of-plane core vibrations of anthracene.

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Igor A. Ar'ev and Nikolai I. Lebovka "Methods of effective molecular size evaluation and temperature shifts of S₁ S₀ anthracene spectrum", Proc. SPIE 4938, Selected Papers from the International Conference on Spectroscopy of Molecules and Crystals, (11 December 2002); https://doi.org/10.1117/12.486667

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