2-噻吩乙酸邻菲口罗啉铕、铽配合物的合成表征及荧光性能研究  

Synthesis,Characterization and Luminescence Properties of Coordination Compounds of Europium and Terbium with 2-Thiopheneacetic Acid and Phenanthroline

作　　者：张梅[1] 赵永亮[1,2] 王连蒙[1] 高德青 

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]北京大学稀土材料化学及应用国家重点实验室,北京100871 [3]五普塔尔大学,德国五普塔尔42119

出　　处：《稀土》2008年第3期27-31,共5页Chinese Rare Earths

基　　金：国家自然科学基金项目资助(20461002);教育部春晖计划基金(Z2004-2-15029)

摘　　要：合成了以Eu3+,Tb3+及Eu3+,Tb3+掺杂RE3+(La3+,Gd3+,Y3+)为中心,以2-噻吩乙酸和1,10-邻菲口罗啉为配体的两个系列8种同核与掺杂稀土固体配合物。对其进行了稀土及C、H和N元素分析、摩尔电导、热谱、红外光谱、核磁共振氢谱的测定及荧光性能研究。确定了配合物的组成为REL3L′和RE0.5Ln0.5L3L′(RE=Eu,Tb;Ln=La,Gd,Y;L=2-噻吩乙酸;L′=1,10-邻菲口罗啉,在常温下测定了它们的固态粉末荧光光谱,发现掺杂离子(La3+,Gd3+,Y3+)使稀土Eu3+离子发光明显增强,讨论了掺杂稀土离子对铕、铽配合物的发光影响。Eight solid coordination compounds of rare earth Eu3 ＋ , Tb3 ＋ and Eu3 ＋ , Tb3 ＋ doped RE3 ＋ （ La3 ＋ , Gd3 ＋ and Y3 ＋ ） with 2 - thiopheneacetic acid and 1,10 - phenanthroline have been synthesized. Their structure have been characterized by rare earth coordination titration, elemental analysis, molar conductance, TG - DTA, IR spectra and 1HNMR spectra. The compositions of the complexes were confirmed to be REL3L＇ and RE0.5Lr0.5L3L＇ （RE= Eu,Th;Ln= La,Gd,Y;L=2- thiopheneacetic acid,L＇ = 1,10 - phenanthroline）.The ligand coordinates with rare earth ions through two oxygen atoms of the acid and two nitrogen atoms from phen C = N group, so the coordination number is eight. The fluorescence intensity of Eu ＋ complexes are enhanced after doping with La3 ＋, Gd3 ＋ and Y3 ＋. The influence of co - doped rare earth ions has also been discussed.

关 键 词：2-噻吩乙酸 1 10-邻菲啰啉 铕 铽 

分 类 号：O614.33[理学—无机化学] O482.3[理学—化学]