INTERLIGAND ENERGY TRANSFER IN EUROPIUM(III) MESOGENIC ADDUCTS
a:2:{s:4:"TEXT";s:129:"D. V. Lapaev, V. G. Nikiforov, G. M. Safiullin, I. G. Galyaviev, V. I. Dzabarov, А. А. Knyazev, V. S. Lobkov, Y. G. Galyametdinov";s:4:"TYPE";s:4:"text";}
Keywords: rare-earth complexes, ?-diketones, europium(III), intramolecular energy transfer, spectroscopic properties
Pages: 802-808
Abstract
An analysis of the absorption and luminescence spectra and luminescence kinetics showed that in the Eu(DK)3bpy17-17 mesogenic adduct, 5,5′-diheptadecyl-2,2′-bipyridine (bpy17-17) took an active part in the energy transfer to the Eu3+ ion. The interligand energy transfer from β-diketonate (DK) ligands was the major mechanism of excitation of bpy17-17. Importantly, the interligand excitation complex considerably decreased radiation losses during the energy transfer from the absorbing DK ligands to the emitting level of Eu3+.
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