均苯三甲酸邻菲罗啉稀土配合物的合成、表征及荧光性质  

Synthesis,Characterization and Fluorescence Properties of the Solid Complexes of Rare Earth with Trimesic Acid and 1,10-Phenanthroline

作　　者：乌仁其木格[1] 赵永亮[1,2] 魏晓燕[1] 付晓涛[1] 马瑞军[1] 李欢欢[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]北京大学稀土材料化学及应用国家重点实验室,北京100871

出　　处：《稀土》2009年第2期1-4,共4页Chinese Rare Earths

基　　金：国家自然科学基金项目资助(20461002);内蒙古自然科学基金项目资助(200711020203)

摘　　要：分别合成了以均苯三甲酸(H3BTC)和邻菲罗啉(phen)为配体,以Sm、Eu、Tb和Dy为中心的4种稀土三元配合物,通过元素分析及稀土络合滴定确定了配合物的组成为RELL′1.5.2H20(L=BTC,L′=phen);配合物的红外光谱、紫外光谱和荧光光谱测定结果表明,配合物中均苯三甲酸根的羧基氧原子和邻菲罗啉的氮原子均与稀土离子配位成键;四种配合物均可发出稀土离子的特征荧光,铕、铽配合物具有良好的荧光性能,钐、镝配合物也发出较强的特征荧光。Four complexes of rare earth （RE= Sm,Eu,Tb,Dy） with 1,3,5 - benzene trixcarboxylic acid （HBBTC） and 1, 10- phenanthroline were synthesized. Their chemical formula was determined to be RELL′1.5.2H20（L=BTC,L′=phen） by elemental analysis and rare earth complexomefic tritrafion. IR spectra, UV and fluorescence spectra have been studied. The results indicate that the rare earth ions are bounded with the oxygen atoms of trimesic acid, and with the nitrogen atoms of 1 ,10- phenanthroline. Fluorescence spectra of the complexes were determined at room temperature. The results indicate that these complexes can emit characteristic fluorescence from rare earth ion （Sm^3＋、Eu^3＋ 、Tb^3 ＋ 、Dy^3＋ ）. It shows that the triplet state exergy of the lignd trimesic acid is higher than the lowest excitation state energy level of RE^3＋ , the absorbing energy of the ligand may effectively transferred to RE^3＋ The fluorescent intensity of europium and terbium complexes are stronger.

关 键 词：均苯三甲酸 邻菲罗啉 铕配合物 荧光性能 

分 类 号：O614.33[理学—无机化学] O482.3[理学—化学]