邻、间、对甲氧基苯甲酸铽与1,10-邻菲啰啉三元配合物的合成和发光性能  

Synthesis and Luminescent Properties of Ternary Complexes of Terbium o,m,p-methoxybenzoate with 1,10-phenanthroline

作　　者：高志华[1] 王瑞芬[1] 石士考[1] 

机构地区：[1]河北师范大学化学与材料科学学院,河北石家庄050091

出　　处：《发光学报》2005年第3期344-348,共5页Chinese Journal of Luminescence

基　　金：河北省自然科学基金资助项目(203148;202140)

摘　　要：以邻、间、对甲氧基苯甲酸(o MOBA,m MOBA,p MOBA)为第一配体,以1,10邻菲啰啉(phen)为第二配体,合成了三种甲氧基苯甲酸铽(Ⅲ)与1,10邻菲啰啉的三元配合物ü胤治觥⑴湮坏味ǚ治?确定了配合物的组成分别为Tb(o MOBA)3phen·H2O、Tb(m MOBA)3phen·H2O和Tb(p MOBA)3phen。通过红外光谱对配合物的结构进行了表征,结果表明在配合物中羧基氧原子和邻菲啰啉中的氮原子均参与了配位ü夤馄追治?探讨了第一配体取代基位置的变化,对三元配合物的发光性能的影响。结果表明,三种配合物均具有优良的光致发光性能,各配合物的相应跃迁发射峰位基本上没有变化,5D4→7F6、5D4→7F5两个较强发射峰的强度顺序为:Tb(o MOBA)3phenoH2O>Tb(m MOBA)3phenoH2O>Tb(p MOBA)3phen。Many organic complexes of rare earth(Sm,Eu,Tb,Dy) have a fine luminescent properties. Because the homochromatism theirs fluorescence is good, the intensity of luminescent and their interior quantum efficiency are higher, that is benefit to the panchromatic display. In recent year it caused denseness interest in high-tech industry and the application foreground is very vast. For looking for the good photoluminescence and electroluminescence materials, in our work three ternary complexes of Tb were synthesized with o,m,p-methoxybenzoic acid (o-MOBA, m-MOBA, p-MOBA) as the first ligand and 1,10-phenanthroline(phen) as the second ligand.The content of Tb,C,H and N were measured by using EDTA titration method and a Flash-EA model 1112 elemental analyzer. The constitution of the three complexes was confirmed respectively as follows:(Tb(o-MOBA)_3phen·H_2O, ) Tb(m-MOBA)_3phen·H_2O and Tb(p-MOBA)_3phen.The IR spectra of free ligands and complexes were recorded by model 1730 Fourier transform infrared spectroscopy with KBr pellet in the range of 350~3 500 cm^(-1). The results show that two characteristic absorption peak(υ_(CO),δ_(O—H)) of methoxybenzoic acid disappeared and the anti-symmetric and symmetric (stretching) vibration absorption peak of carboxyl(υ_(as),υ_s) appeared in the complexes. These reveals that (methoxybenzoate) took part in the coordination. The characteristic absorption peak of phen(υ_(CN),δ_(C—H)) shifted to lower frequencies at different degree in the title complexes, which shows two nitrogen atoms in the phen also took part in the coordination.Excitation and luminescence spectra of the title complex were carried out and recorded by using a Hitachi F-4500 fluorescence spectrophotometer. Excitation spectra of the title complexes were obtained in a rang e of 200~450 nm. Fluorescence spectra was observed in a range of 400~700 nm. The fluorescence spectra data shows four characteristic emission peak centered at 489, 545, 582 and 621 nm, which originated from the (~5D_4→~ 7F_J(J=6~3)) transi

关 键 词：三元配合物 苯甲酸铽 合成 对甲氧基苯甲酸 菲 配位滴定分析 荧光光谱分析 光致发光性能 取代基位置 铽(Ⅲ) 元素分析 红外光谱 跃迁发射 强度顺序 H2O 配体 氮原子 氧原子 峰位 

分 类 号：O614.33[理学—无机化学] TN383.1[理学—化学]