3XU Yong yuan, Hemmilr I A . Lovgren T N E Analyst. , 1992,117 (7) : 1061.
4Massahito U, Yasuo M. Synthesis and properties of curopium complexes with β- diketone ligands for organic electrolumines- cence devices [ J ]. Bull. Chem. Soc. Jpn. , 1998,71:2253.
5Keizou O , Masahiro U, Red organic electroluminescence devices based on novel furan contained Eu comples as an emitting lay- er [ J ]. Chem. Lett. , 1998,801.
