Abstract
The fluorescence quenching of tryptophan (Try) by the β-diketonate, Hfod (6,6,7,7,8,8,8-heptafluoro-2,2- dimethyloctanedione-3,5), and EuCl3 ⋅ 6H2O in liquid and frozen C2H5OH solutions was studied. It was found that, in contrast to Eu(III), the deactivation of Try* by the β-diketonate Eu(fod)3 in C2H5OH solutions was due to electron transfer to the Hfod organic ligand, rather than inner-sphere electron transfer to the lanthanide, and it occurred in the outer coordination sphere of the [Try* ⋅ Eu(fod)3] complex.
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Translated from Khimiya Vysokikh Energii, Vol. 39, No. 2, 2005, pp. 126–128.
Original Russian Text Copyright © 2005 by Kazakov, Ostakhov, Alyab’ev, Farrakhova.
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Kazakov, V.P., Ostakhov, S.S., Alyab’ev, A.S. et al. Reversible photoinduced electron transfer from tryptophan to Eu(fod)3, Hfod, and EuCl3 ⋅ 6H2O in liquid and frozen ethanol solutions. High Energy Chem 39, 97–99 (2005). https://doi.org/10.1007/s10733-005-0019-0
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DOI: https://doi.org/10.1007/s10733-005-0019-0