Abstract
Effects of the excitation energy, temperature, and pH on the quantum yield and the Stern-Volmer quenching constant for tryptophan fluorescence quenching by europium(III) chloride were studied. Competition between intracomplex reversible photoinduced electron transfer from tryptophan to Eu(III) ions and the processes of internal conversion and vibrational relaxation of higher excited singlet states S n (n > 1) of tryptophan was revealed.
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Original Russian Text © V.P. Kazakov, S.S. Ostakhov, G.G. Farrakhova, 2008, published in Khimiya Vysokikh Energii, 2008, Vol. 42, No. 4, pp. 325–328.
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Kazakov, V.P., Ostakhov, S.S. & Farrakhova, G.G. Photoinduced electron transfer from higher excited singlet states of tryprophan: 1. Effects of the excitation wavelength, pH, and temperature on quenching of Tryptophan fluorescence by europium(III) ions. High Energy Chem 42, 283–286 (2008). https://doi.org/10.1134/S0018143908040073
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DOI: https://doi.org/10.1134/S0018143908040073