Studies on synthesis and fluorescent property of rare earth complexes RE(ABMF) 2AA and copolymers RE(ABMF) 2AA-co-MMA

• Published in: Journal of rare earths 2009-02, Vol.27 (1), p.28-32
• Main Authors: SUO, Quanling, LU, Fang, SHI, Jianwei, HONG, Hailong, LUO, Jiping
• Format: Article
• Language: English
• Subjects: copolymerization; fluorescence property; synthesis; ternary rare earth complex
• ISSN: 1002-0721; 2509-4963
• DOI: 10.1016/S1002-0721(08)60184-2

Four new complexes RE(ABMF) 2AA (RE=Sm, Eu, Tb, Dy) were synthesized by the reaction of RECl 3 ·6H 2O with acrylic acid (HAA) and 1-(2-furyl)-3-phenyl-1,3-propanedione (ABMF). The copolymerization of the rare earth complexes with methyl methacrylate was studied by using 2,2-azobis-isobutyronitrile as an initiator. The composition and structure of the four complexes were characterized by elemental analysis, UV-vis and FTIR. The glass transition temperature and molecular weight of the copolymers were determined. Photoluminescent measurement showed that ligand ABMF could efficiently transfer the energy to Sm 3+ and Eu 3+ ions in the complexes and sensitize the luminescence of the rare earth ions, but could not sensitize Tb 3+ and Dy 3+ ions. As a result, both Sm 3+ and Eu 3+ complexes emitted the characteristic fluorescence of Sm 3+ and Eu 3+ ions due to the f–f transitions. The four copolymers could emit strong fluorescence of the rare earth ions.