Preparation and luminescence of rare earth complex Eu(DBM)3(TPPO)

Abstract

Using Eu2O3 as source of europium, anhydrous ethanol as solvent system, methylene benzoyl(DBM) as first ligands, triphenyl phosphine (TPPO) as second ligands, the europium(III) ternary rare earth complex Eu(DBM)3TPPO has been successfully prepared. The samples were characterized by fluorescence spectrum(FS), Fourier transform infrared spectroscopy(FT-IR), thermogravimetry differential scanning calorimetry(TG-DS) and scanning electron microscope(SEM). The influence of TPPO on luminescence intensity, color temperature, color coordinates, morphology and thermal stability of the samples were analyzed. The results showed that the addition of second ligand could enhance the luminescence intensity of Eu(DBM)3TPPO. Eu(DBM)3TPPO can emit strong red fluorescence when excited by 395nm ultraviolet light. The color coordinate of Eu(DBM)3(TPPO) is (0.63, 0.36). The Eu(DBM)3TPPO is a kind of red luminescent material with wide application prospect.