Synthesis and Characteristic Study on Complexes of Europium(Ⅲ) and Maleic Acid Doped with Non-Fluorescent Ions
来源期刊：JOURNAL OF RARE EARTHS2007年第5期
论文作者：Ji Qing Ni Yaru Lu Chunhua Shen Qingyue Xu Zhongzi
Key words：europium; non-fluorescent ion; maleic acid; crystal structure; fluorescence spectrum; rare earths;
Abstract: Complex of europium (Ⅲ) with maleic acid, and binuclear complexes of europium(Ⅲ)with maleic acid doped with non-fluorescent ions gadolinium, lanthanum and yttrium, were synthesized. The compositions and structures of complexes were characterized with elemental analysis, single crystal X-ray diffraction, IR and DSC-TG. Fluorescent properties were studied with fluorescence spectrum. The results indicated that the strongest fluorescent complexes were obtained when the ratio of europium and non-fluorescent ion was 8: 2. The order of Eu3+ fluorescence strengthened by three doped rare earths was Gd3+＞La3+＞Y3+.
Ji Qing1，Ni Yaru1，Lu Chunhua1，Shen Qingyue1，Xu Zhongzi1
(1.College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210009, China)
Abstract:Complex of europium (Ⅲ) with maleic acid, and binuclear complexes of europium(Ⅲ)with maleic acid doped with non-fluorescent ions gadolinium, lanthanum and yttrium, were synthesized. The compositions and structures of complexes were characterized with elemental analysis, single crystal X-ray diffraction, IR and DSC-TG. Fluorescent properties were studied with fluorescence spectrum. The results indicated that the strongest fluorescent complexes were obtained when the ratio of europium and non-fluorescent ion was 8: 2. The order of Eu3+ fluorescence strengthened by three doped rare earths was Gd3+＞La3+＞Y3+.
Key words:europium; non-fluorescent ion; maleic acid; crystal structure; fluorescence spectrum; rare earths;
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