Abstract: Eu (Ibu) ₃phen was synthesized,with  non-steroidal anti-inflammatory drug Ibuprofen as the first ligand,Phenanthroline as the second ligand and the rare earth ion Eu³⁺ as the central ion by solvent method.The structure of the complex was characterized by elemental analysis,UV spectroscopy,and infrared spectroscopy,and the fluorescence properties of the complex were studied.The results indicate that ibuprofen can effectively serve as an antenna ligand,greatly sensitize luminescence of Eu³⁺,so the fluorescence emission spectra of the complex Eu (Ibu) ₃phen exhibit strong characteristic fluorescence emission peaks of europium ions at 589 nm and 612 nm.The complex has good luminescence performance,so it can be used as a kind of environmentally friendly fluorescent material.

Key words: rare earth complex, Eu, Ibuprofen, fluorescence property