SYNTHESIS ANS LUMINESCENCE PROPERTIES OF TERBIUM COMPLEX: Tb(BMPD)3(H2O)2

New luminescent terbium complex was synthesized by using β-diketonate 1,3-[bis(4-methoxyphenyl)]propane-1,3-dionato (BMPD) ligand. The formation of BMPD and its terbium complex was confirmed with the help of various techniques such as CHN elemental analysis, IR, NMR. The organic ligand absorbed the energy and transferred it to the central metal ion in an efficient manner through sensitization process which was supported by the UV-visible and photoluminescence spectroscopy. The luminescence behavior of the complex was examined in detail. The characteristic bands corresponding to D4→Fj transitions of terbium ion observed in the emission spectrum of complex. Among the transitions, the most intense electric dipole transition was appeared at 545 nm which was assigned to the D4→F5 transition. This prominent peak was responsible for the green color of the terbium complex. This fact further supported by color coordinates which were also located in the green region of the chromaticity diagram. These results indicated that the complex can be used as emitting material in display devices.