IR luminescence of neodymium(III) and ytterbium(III) complexes with acylpyrazolones in solutions |
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Authors: | S B Meshkova V S Matiichuk M A Potopnyk Z M Topilova V P Gorodnyuk K N Olenich I V Bol’bot |
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Institution: | 1.Bogatskii Physicochemical Institute,National Academy of Sciences of Ukraine,Odessa,Ukraine;2.Franko National University,Lviv,Ukraine |
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Abstract: | Acylpyrazolones (L1–L5) have been synthesized and the conditions of their complexation with neodymium(III) and ytterbium(III)
ions in aqueous solutions have been elucidated. The component ratio in the synthesized complexes is Nd(Yb): L = 1: 1. The
conditions of excitation and luminescence of the ligands and complexes have been studied. The formation of mixed-ligand complexes
upon the introduction of trioctyl- or triphenylphosphine oxide leads to a considerable rise of neodymium and ytterbium. In
the presence of 1,10-phenanthroline and bathophenanthroline, competing complexation leads to a 20–70% decrease in luminescence
intensity. The introduction of water-miscible organic solvents (30 vol %) decreases the Nd(III) and Yb(III) luminescence intensity
by a factor of 9–20. |
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