Abstract
New tris(3-phenyl-4-aroyl-5-isoxazolonate)terbium(III) complexes have been synthesized and characterized by various spectroscopic techniques. Due to an efficient energy transfer from the heterocyclic β-diketonate ligand to the central Tb3+, these complexes show a strong emission corresponding to Tb3+5D4–7FJ (J=6, 5, 4, 3) transitions, with 5D4–7F5 (545nm) green emission as the most prominent one. The overall quantum yields and luminescent lifetimes of these complexes were found to be promising as compared to previously reported terbium-1-phenyl-3-methyl-4-acyl-5-pyrazolonate complexes.
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