Preparation and Judd-Ofelt Analysis of Warm Red Luminescent Eu Complexes for Semiconductor Lasing Devices.

Six novel red photoluminescent Eu complexes with 3-formyl chromone as the primary sensitizer (L) were synthesized using the solution precipitation method. These complexes are [Eu(L).X] where X is 2HO (C1), phen (C2), neo (C3), bipy (C4), dmph (C5), and biquno (C6).

New Highly Luminescent Red Emitting Complexes: Synthesis, Characterization, Judd-Ofelt Intensity Parameters and Pharmacological Investigations.

A series of new red luminescent Eu(III) complexes were integrated by β-hydroxyketone ligand 2-(4-chlorophenyl)-1-(2-hydroxy-4,6-dimethoxyphenyl)ethan-1-one (CHDME) as main ligand and 1,10-phenanthroline (phen) or 5,6-dimethyl-1,10-phenanthroline (dmphen) or bathophenanthroline (bathophen) as ancillary ligand. The complexes were synthesised by solution precipitation method. The CHDME is taken as ligand and its analogous Eu(III) complexes were characterized by elemental analysis, FT-IR and H-NMR.