均苯三甲酸铽铵配合物的合成及其荧光特性研究  

Research on Preparation and Luminescence Properties of the Complex(NH_4)_2Tb(C_9H_3O_6)_3Cl·7H_2O·2H_3^+O

作　　者：杨念华[1] 周丽荣[1] 王芬[1] 周立群[1] 梁永光[2] 李明[2] 

机构地区：[1]湖北大学有机功能分子合成与应用教育部重点实验室,湖北武汉430062 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《化学与生物工程》2007年第2期12-14,共3页Chemistry & Bioengineering

基　　金：湖北省自然科学基金项目(2005ABA059);有机功能分子合成与应用教育部重点实验室资助项目

摘　　要：采用液相反应合成出均苯三甲酸铽铵发光配合物。通过元素分析、红外和紫外光谱、X-射线粉末衍射和热分析确定其化学组成为(NH4)2Tb(C9H3O6)3Cl.7H2O.2H3+O。配合物的结构属于单斜晶系,空间点群:P21/c,晶胞参数:a=1.43825 nm,b=1.24151 nm,c=0.65938 nm,α=90°,β=122.24°,γ=90°,V=1.1773 nm3。荧光光谱分析结果表明,Tb3+与配体之间的有效能量传递使配合物在紫外光照射下发出强的绿色特征荧光,荧光发射峰485 nm5、40 nm、580 nm和615 nm分别归属于5D4→7F65、D4→7F55、D4→7F4和5D4→7F3跃迁,其中5D4→7F5发射带最强。A new luminescent terbium coordination compound was synthesized by solution reaction and characterized by element analysis, FTIR, UV-Vis, X-ray powder diffraction, TG-DTA and solid fluorescence analysis. The results showed that the complex was （NH4）2Tb（C9H3O6）3Cl·7H2O·2H3^＋O and the crystal structure assigned to monoclinic space group P21/c with crystal parameters a= 1. 43825 nm, b=1. 24151 nm, c=0. 65938 nm, α=90°,β=122.24°,γ=90°and V=1.1773nm^3 . The fluorescence revealed that the excellent energy transferred from ligand to Tb^3＋ , which made the complex emitting strong green characteristic lumines cence under ultraviolet light. In the emission spectra, peaks of 485 nm, 540 nm, 580 nmand 615 nmbelonged ^5D4→^7F6、^5D4→^7F5、^5D4→^7F4 and ^5D4→^7F3 transition of Tb^3＋ , respectively. The strongest peak was ^5D4→^7F5.

关 键 词：均苯三甲酸 铽 铵 配合物 荧光 

分 类 号：O641.4[理学—物理化学] O614.341[理学—化学]