2-羟基-6-甲基尼古丁酸-1,10-菲咯啉三元稀土配合物的合成、表征及谱学性质  

Synthesis,Characterization and Spectroscopic Properties of Ternary Rare Earth Complexes with 2-Hydroxy-6-Methylnico-Tinic Acid and 1,10-Phenanthroline

作　　者：张勇[1] 廖莉玲[2] 刘玉波[1] 李存雄[1] 

机构地区：[1]贵州师范大学贵州省山地环境信息系统与生态环境保护重点实验室,贵州贵阳550001 [2]贵州师范大学化学与材料学院,贵州贵阳550001

出　　处：《稀土》2013年第2期42-46,共5页Chinese Rare Earths

基　　金：贵州省科技厅科学技术基金(黔科合J字LKS[2011]30号);贵州省教育厅自然科学基金(黔教科2010017);贵阳市科技局医疗卫生科技计划项目([2008]筑科科农合同字第14号);贵州省教育厅招标项目(黔教科(2011)018号);贵阳市科技局产学研专项([2008]筑科工合同字第33号)

摘　　要：合成了四种新型的2-羟基-6-甲基尼古丁酸(HA)-1,10-菲咯啉(Phen)三元稀土配合物,通过元素分析、红外光谱法确定其组成为LnA3phen·3H2O(Ln=La、Eu、Gd、Tb),配体的羧基与稀土离子以螯合双齿配位。另重点研究了铕和铽的配合物的荧光性能,两种配合物均具有比较优异的荧光性能,Eu3+和Tb3+均不处于反演中心。EuA3phen·3H2O和TbA3phen·3H2O的荧光寿命分别为1.56 ms和0.32 ms。Four new ternary complexes of rare earths with 2 - hydroxy - 6 - methylnicotinic acid（HA） and 1,10 - Phenanthroline（Phen） were synthesized and characterized by elemental analysis and FFIR spectra. The composition of the complexes was confirmed to be LnA3phen ·3H2O（Ln = La, Eu, Gd, Tb） , and the results showed carboxyl of the ligand che- lated with rare earth ions in chelating bidentate mode. The fluorescence properties of Eu3 ＋ and Tb3 ＋ complexes were specially studied,both complexes had good fluorescence properties but Eu3＋ and Tb3＋ were not at the inversion center. The measured fluorescence lifetime of EuA3 ·3H2 and TbA3 · 3H2O was 0.84 ms and 0.58 ms.

关 键 词：稀土 2-羟基-6-甲基尼古丁酸 1 10-菲咯啉 三元配合物 谱学性质 

分 类 号：O614[理学—无机化学] O657.3[理学—化学]