稀土与对硝基苯乙酸配合物的合成、表征及荧光性质  

Synthesis and Fluorescence Property of Complexes of Rare-earth with p-nitrophenylacetic Acid

作　　者：王少亭[1] 聂峰梅[1] 杨永丽[1] 邓玉恒[1] 宗瑞发[1] 胡秋菊[1] 

机构地区：[1]首都师范大学化学系,北京100037

出　　处：《光谱学与光谱分析》2002年第3期412-413,共2页Spectroscopy and Spectral Analysis

基　　金：北京市科技新星计划 (H0 1 361 0 0 50 1 1 2 )

摘　　要：本文合成了三种稀土与对硝基苯乙酸 (HL)的二元固体配合物 ,通过元素分析等手段确定了其配合物的组成为ReL3·H2 O(Re=Eu ,Sm ,Tb)。用红外光谱、紫外光谱、荧光光谱对该类配合物的结构与性质进行了表征。红外谱表明配体以—COO- 形式与中心离子配位 ,同时这一点也被自由配体和配合物的UV谱所证实。EuL3·H2 O的强红色荧光分属于Eu3+ 的 5D0 → 7F1 和5D0 → 7F2 跃迁。The binary solid complexes had been synthesized using rare-earth ion with p-nitrophenylacetic acid. The chemical formula of ReL3.H2O(Re = Eu, Sm, Tb) complexes was determined by elemental analysis, molar conductivity, and TG-DTA. The composition structure and properties of the binary complexes were tentatively investigated by the analysis of IR, UV, and fluorescence spectra. The IR showed the carboxylic ligand chelates to the center ion to form the complexes, and the complexes contain water molecule of hydration. The result above was also proved by comparison of UV of the ligand and complexes. Two bands of strong red fluorescence of ReL3.H2O may be contributed to the fluorescence spectra of D-5(0) --> F-7(1) and D-5(0) --> F-7(2) transition of Eu3+.

关 键 词：合成 表征 稀土 对硝基苯乙酸 配合物 荧光性质 发光材料 

分 类 号：O614.33[理学—无机化学] O482.31[理学—化学]