5-甲基苯并三唑-1-乙酸铕三元配合物的合成及表征

Synthesis and characterization of 5-Methyl-benzotriazol-1-acetic acid ternary complex of europium

以5-甲基-苯并三唑-1-乙酸和1,10-邻菲啰啉为配体,采用溶液法合成了一种铕配合物。通过元素分析、配位滴定、摩尔电导率、红外光谱和紫外光谱对其进行表征。其组成可能为Eu(L)3phen·3.5H2O(HL=5-甲基-苯并三唑-1-乙酸,5-mbtaa;phen=1,10-邻菲啰啉)。使用热分析和荧光光谱研究了配合物的性质。热分析结果显示:铕配合物具有较好的热稳定性。荧光光谱显示:该配合物发出Eu(Ⅲ)特征荧光,并且5-甲基-苯并三唑-1-乙酸是较好的敏化剂。

Europium complex based on 5-methyl-benzotriazol-1-acetic acid and 1,10-phenanthroline was synthesized by the solution synthetic method. The composition of the title complex might be Eu（L）3phen·3. 5H2O（HL=5-methyl-benzotriazol-1-acetic acid;phen=1,10-phenanthroline）by means of elemental analysis,coordination titration,molar conductivity,IR and UV spectra. The prop-erties of the title complex were investigated by means of thermal analysis and fluorescence spectra. The result of thermal analysis re-vealed the title complex had good thermal stability. Luminescence measurement showed that the complex emitted Eu（Ⅲ） character-istic fluorescence and 5-methyl-benzotriazol-1-acetic acid was the good sensitizer.