Synthesis and Luminescence Properties of Rare Earth (Eu, Tb) Ternary Complexes with β-Diketone and 1,10-Phenanthroline

In order to seek new luminescent materials and study the effects of beta-diketone on the luminescence property of rare earth complexes, a novel beta-diketone ligand 1-phenyl-3-(p-phenylethynylphenyl)-1,3-propanedione (HPPP) was designed and synthesized. Both Eu(PPP)(3)phen and Tb(PPP)(3)phen have been synthesized by the reaction of HPPP and 1,10-phenanthroline (phen) with Eu(III) and Tb(III) respectively and characterized by IR spectra, chemical analysis and elemental analysis. The study on luminescence properties of the complexes finds that HPPP ligand has significant effects on the luminescence property of the rare earth complexes, which were interpreted by quantum chemistry calculation.