Near Infrared Luminescence of Lanthanides in Complexes with Organic Dyes |
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Authors: | Yurii Korovin Natalia Rusakova |
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Affiliation: | (1) A. V. Bogatsky Physico-Chemical Institute, National Academy of Sciences of Ukraine, 65080 Odessa, Ukraine |
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Abstract: | Spectral-luminescence characteristics of Yb3+ and Nd3+ ions in water solutions of their complexes with some organic dyes of sulfophenylphthalexones group have been considered. Complexes can be efficiently excited with visible light (exc = 532 nm). 4f-Luminescence as a result of energy transfer from the dye moiety to the lanthanide ion was shown. Complexation of new polydentate ligand L of sulfophenylphthalexones type increases the luminescence lifetimes because of the reduced solvation of the ion by water. They were determined as 12.60 s for complex Yb-L and 1.45 s for Nd-L. |
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Keywords: | Ytterbium and neodymium complexes organic dyes luminescence |
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