铕、铽邻苯二甲酸-联吡啶混合配合物的合成及性质研究  

Fluorescence Studies of Mixed Coordination Compounds of o Phthalate 2,2′ bipyridyl Eu 3+ Tb 3+

作　　者：赵永亮[1] 孟宁 赵凤英[2] 

机构地区：[1]内蒙古大学化学系,内蒙古呼和浩特010021 [2]内蒙古林学院,内蒙古呼和浩特010019

出　　处：《内蒙古大学学报（自然科学版）》1999年第5期612-615,共4页Journal of Inner Mongolia University：Natural Science Edition

基　　金：内蒙古自然科学基金

摘　　要：实验合成了邻苯二甲酸２，２′联吡啶混配稀土（铕、铽）配合物．在 ３２３ ｎｍ 紫外光激发下，测定了这些配合物的荧光．结果表明，铕、铽之间存在强相互作用．铽对铕的荧光强度有较强的敏化作用，而铕对铽有较强的猝灭作用，但其荧光发射峰位置基本不变．元素分析和热分析确定了配合物的化学组成为 Ｒｅ２ Ｌ３ Ｌ′·５ Ｈ２ Ｏ（ Ｌ＝ 邻苯二甲酸根， Ｌ′＝ ２，２′联吡啶）．红外光谱分析表明。The o phthalate and 2 2′ bipyridyl mixed coordination compounds of Eu 3+ Tb 3+ have been synthesized.Fluorescence studies on all of the samples were preformed.The data of their fluorescence spectra excited by 323 nm UV light showed that there are interactions between europium ions and terbium ions,the fluorescence intensities of europium ions were greatly sensitized by terbium ions and those of terbium ions were strongly quenched by europium ions.But the peak positions of their \{emission\} bands did not shift obviously.The IR spectra showed that no free COOH groups exist and all of the nitrogen atoms of 2,2′ bipyridyl molecules coordinate to Eu 3+ and Tb 3+ in all of these coordination compounds.Elemental analysis and the data of TG and DTA showed that the composition of the coordination compounds are RE 2L 3L′·5H 2O (L=o phthalate,L′=2,2′ bipyridyl).

关 键 词：铕-铽配合物 邻苯二甲酸 联吡啶 荧光光谱 

分 类 号：O614.338[理学—无机化学]