Enhancement of the luminescence of europium(III) β-diketonates in the ligand series β-diketones-their unsaturated analogues-copolymers

A change in the luminescence intensity of europium compounds was studied for the series of ligands β-diketones-their unsaturated analogues (monomers)-copolymers with styrene (methyl methacrylate). The optimal ratios of comonomers (1 : 2; 1 : 5) providing the maximum luminescence intensity of europiu...

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Veröffentlicht in:	Journal of analytical chemistry (New York, N.Y.) N.Y.), 2000-07, Vol.55 (7), p.676-681
Hauptverfasser:	MESHKOVA, S. B, TOPILOVA, Z. M, NAZARENKO, N. A, VOLOSHANOVSKII, I. S, MALINKA, E. V
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic and molecular physics Copolymers Diketones Europium Europium compounds Exact sciences and technology Fluorescence and phosphorescence radiationless transitions, quenching (intersystem crossing, internal conversion) Ligands Luminescence Molecular properties and interactions with photons Physics Polymethyl methacrylate Radiationless transitions, quenching
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Beschreibung
Zusammenfassung:	A change in the luminescence intensity of europium compounds was studied for the series of ligands β-diketones-their unsaturated analogues (monomers)-copolymers with styrene (methyl methacrylate). The optimal ratios of comonomers (1 : 2; 1 : 5) providing the maximum luminescence intensity of europium were determined. Europium (n x 10-3%) was determined in Ce, Pr, Nd, and Ho oxides, which are strong luminescence quenchers, using copolymers containing trifluoroacetylacetone and benzoylacetone.
ISSN:	1061-9348 1608-3199
DOI:	10.1007/BF02828006