Abstract
Polyphenylquinolines (PPQs), which are compound donor–acceptor complexes, are studied by luminescence-kinetic spectroscopy. It is shown that, as the π system becomes stronger on passing from (O, C) to (O, IC) and (PhA, C), an increase in the lifetime T of the excited state is first observed, and for the strongest charge-transfer complex PPQ (PhA, IC), whose luminescence kinetics is described by two exponentials, the lifetime decreases to a value equal to T of PPQ (O, C). This indicates that this complex has two emitting centers localized in the arylene moiety and in the phenylquinoline ring and thereby confirms a previously made conclusion that compound donor–acceptor complexes are formed in polyphenylquinolines with a branched π system of compound D–A complexes.
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Original Russian Text © E.L. Aleksandrova, V.M. Svetlichnyi, N.V. Matyushina, L.A. Myagkova, S.V. Daineko, I.L. Martynov, A.R. Tameev, 2015, published in Fizika i Tekhnika Poluprovodnikov, 2015, Vol. 49, No. 7, pp. 981–983.
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Aleksandrova, E.L., Svetlichnyi, V.M., Matyushina, N.V. et al. Luminescence-kinetic spectroscopy of compound complexes of polyphenylquinolines. Semiconductors 49, 959–961 (2015). https://doi.org/10.1134/S1063782615070027
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DOI: https://doi.org/10.1134/S1063782615070027