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Migration-Accelerated Quenching of Triplet Excitations of Organic Molecules in Toluene at 77 K

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Abstract

The influence of the organic molecule (naphthalene, acenaphthene, and benzophenone) concentration in toluene at 77 K on the phosphorescence parameters of degassed and non-degassed solutions is studied for organic molecule concentrations ranging from 0.025 to 0.8 M. The migration-accelerated quenching of triplet excitations of naphthalene and acenaphthene by oxygen molecules is established. A conclusion is drawn that this quenching mechanism can be one of the main reasons for the influence of the concentration on the phosphorescence parameters of impurity centers in non-degassed solid solutions of organic compounds at 77 K.

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Authors and Affiliations

  1. Stavropol' State University, Russia

    M. I. Deryabin, O. V. Vashkevich & A. Yu. Shalnev

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  1. M. I. Deryabin
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  2. O. V. Vashkevich
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  3. A. Yu. Shalnev
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Deryabin, M.I., Vashkevich, O.V. & Shalnev, A.Y. Migration-Accelerated Quenching of Triplet Excitations of Organic Molecules in Toluene at 77 K. Russian Physics Journal 47, 567–570 (2004). https://doi.org/10.1023/B:RUPJ.0000046332.79214.78

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  • DOI: https://doi.org/10.1023/B:RUPJ.0000046332.79214.78

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