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Kinetic Aspects in Solid-Matrix Luminescence for Lumiphors Adsorbed on Filter Paper

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Abstract:

From the room-temperature fluorescence lifetimes of benzo(f)quinoline and 4-phenylphenol adsorbed on filter paper and earlier luminescence data, several photophysical parameters were calculated. Also, a number of equations that relate radiative and nonradiative rate constants to pre-exponential factors and activation energy terms were considered. By combining the luminescence data obtained in this work and previous luminescence data acquired as a function of temperature, it was possible to derive equations for the two model compounds that described fluorescence quantum yield and phosphorescence quantum yield as a function of the pre-exponential factors, activation energies, and temperature. These equations were somewhat complex, but some fundamental conclusions were revealed after a few simplifying assumptions were made.

Keywords: Photophysical rate constants; Solid-matrix luminescence

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702914336796

Affiliations: Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071

Publication date: May 1, 1991

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