铕、铽—2-噻吩甲酸—1,10-菲咯啉三元配合物的合成及荧光性质的研究  

Synthesis,Characterization and Fluorescence of Eu^(3+),Tb^(3+) Complexes with 2-Thiophencarboxylic Acid and 1,10-Phenanthroline

作　　者：宝金荣[1] 朱晓伟[2] 王智亮[1] 赵永亮[1] 

机构地区：[1]内蒙古大学化学化工学院,内蒙古呼和浩特010021 [2]内蒙古医学院药学院,内蒙古呼和浩特010058

出　　处：《稀土》2007年第3期38-41,共4页Chinese Rare Earths

基　　金：内蒙古大学青年基金项目资助(nd2001600)

摘　　要：同时合成了高氯酸铕、铽与2-噻吩甲酸、1,10-菲咯啉(phen)的三元配合物和高氯酸铕、铽与2-噻吩甲酸的二元配合物,对配合物进行了元素分析、稀土络合滴定、红外光谱、摩尔电导测定,确定了配合物组成分别为:REL3.2H2O及REL3L′.C2H5OH(RE=Eu,T b;L=2-噻吩甲酸,L′=1,10-菲咯啉)。摩尔电导数据表明,此类配合物为非电解质。红外光谱测定表明,配体2-噻吩甲酸羧基氧与稀土离子配位,配体1,10-菲咯啉两个氮原子与稀土离子配位。荧光光谱实验表明,1,10-菲咯啉加入到铕-2-噻吩甲酸二元配合物和铽-2-噻吩甲酸二元配合物中形成三元配合物后它们的荧光明显增强。Two ternary complexes of Eu^3＋ and Tb^3＋ with 2-thiophene carboxylic acid（L）- 1,10-phenanthroline and two binary complexes of 2-thiophene carboxylic acid have been synthesized. By elecmental analysis,rare earth coordination titration;molar conductivity measurement,the compositions of the complexes were suggested as REL3·2H2O and REL3L＇·C2H5OH （RE=Eu,Tb,L= 2-thiophene carboxylic acid, L＇=1.10-phenanthroline） respectively. The ligand and coordination compounds have been studied by means of IR spectra ,fluorescent excitation and emission spectra. IR spectra studies indicate that the 2-thiophene carboxylic acid ligand is bonded with RE（Ⅲ） through oxygen atoms in carboxyl group and 1,10-phenanthroline ligand is bonded with RE（Ⅲ） through nitrogen atoms . The molar conductivities in DMF solvent indicate that the complexes are nonelectrolyte. The fluoresence spectra show that the fluorescence emission intensity of ternary complexes is more intensive than that of the binary complexes.

关 键 词：荧光 稀土配合物 2-噻吩甲酸 1 10-菲咯啉 

分 类 号：O614.33[理学—无机化学] O482.31[理学—化学]