铕-8-羟基喹啉-噻吩甲酰基三氟丙酮三元固体配合物的合成和表征  

Synthesis and Characterization of Ternary Solid Complex of Europium-8HOQ-TTA

作　　者：李乐乐[1] 苏海全[1] 秦建芳[1] 

机构地区：[1]内蒙古大学化学化工学院,内蒙古自治区稀土材料化学与物理重点实验室,内蒙古呼和浩特010021

出　　处：《中国稀土学报》2006年第2期241-243,共3页Journal of the Chinese Society of Rare Earths

基　　金：教育部科学技术研究重点项目(204029);内蒙古教育厅科学技术研究重点项目(NJ03121)

摘　　要：以8-羟基喹啉(8HOQ)、噻吩甲酰基三氟丙酮(TTA)为配体合成了稀土固体三元配合物。元素分析表明配合物的组成为Eu(TTA)(8HOQ)2·H2O。红外光谱、紫外光谱分析表明配合物中配体TTA和8HOQ均与稀土螯合配位。荧光光谱分析表明,合成的配合物根据激发光的不同,可发射蓝光和红光。以326nm激发时,发射415nm左右的蓝光和617nm的红光的混合光;以348nm激发时,主要发射618nm的红光。蓝光来自配体8HOQ的发射,而红光来自稀土离子的发射。配体TTA和稀土Eu3+之间存在高效率的能量传递。Ternary complex of Eu （Ⅲ） with 8- hydroxyquinoline （8HOQ） and thenoyltrifluoro-acetone （TTA） was synthesized. The elemental analysis data suggested that the composition of the complex is Eu （TTA） （8HOQ） 2·H2O. The results of infrared spectra and ultraviolet absorption spectra indicated that both TTA and 8HOQ chelate to europium in the complex. The fluorescence characteristic and emission mechanism of the complex were discussed based on the fluorescence spectra. It was found that the comolex emits red or violet fluorescence dependant on the excitation wavelength. Both violet fluorescence at 415 nm and red fluorescence at 617 nm were observed by using 326 nm excitation light, while 617 nm red fluorescence dominated the fluorescence spectrum when the complex was excited with 348 nm light. The violet fluorescence emission is from Eu （Ⅲ ）, while the red fluorescence emission is from chelate ligand 8HOQ. High efficiency energy transfer was found between TTA and Eu （ Ⅲ ） in the complex.

关 键 词：Eu(Ⅲ) 稀土三元配合物 荧光 

分 类 号：O614.33[理学—无机化学]