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

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 properties of the title complex were investigated by means of thermal analysis and fluorescence spectra. The result of thermal analysis revealed the title complex had good thermal stability. Luminescence measurement showed that the complex emitted Eu(Ⅲ)characteristic fluorescence and 5-methyl-benzotriazol-1-acetic acid was the good sensitizer.