Synthesis and photoluminescent properties of orange light emitting Sm(III) complex with 2-hydroxy-4-methoxy-2-(4-chlorophenyl)acetophenone and 2,2?-bipyridine
Keywords:
Sm(III) complex, β-hydroxyketone, elemental analysis, 2,2?-bipyridine, photoluminescent propertyAbstract
New β-hydroxyketone ligand 2-hydroxy-4-methoxy-2-(4-chlorophenyl)acetophenone (CHME) and its ternary Sm(III) complex Sm(CHME)3.bipy were synthesized. The ligand as well as complex were characterized by elemental analysis, FT-IR, 1H-NMR and photoluminescent spectroscopic techniques. Elemental analysis were in high agreement with the calculated data of the synthesized ligand and Sm(III) complex. The result of 1H-NMR and infrared spectra showed that the free ligand CHME was coordinated with Sm(III) ion through the phenolic hydroxyl group, carbonyl group and nitrogen atoms of the ancillary ligand 2,2?-bipyridine. The ancillary ligand acting as a light harvesting center was involved as a result complex showed good luminescent properties. The emission spectrum of complex was recorded in solid state at room temperature on monitoring excitation at λex = 385 nm. The CIE color coordinates (x, y) of the complex is located at 0.4356, 0.4966 which lie in orange spectral region.
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