Abstract

Using Eu₂O₃ as the source of europium, anhydrous ethanol as the solvent system, methylene benzoyl (DBM), 2-thiophenyl trifluoroacetone (TTA), 1-(4-tert-butylphenyl)-3 -(4-methoxyphenyl) −1,3-propanedione (Avobenzone) and 2,4,6-trimethylbenzoic acid (TMBA) as first ligands, triphenyl phosphine (TPPO) as second ligands, the four kinds complexes of europium(III) ternary rare earth have been successfully prepared by precipitation reaction. The samples were characterized by absolute quantum efficiency meter (DQE), fluorescence spectrum (FS), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetry differential scanning calorimetry(TG-DSC). The influence of first ligand change on fluorescence intensity, fluorescence quantum efficiency, color temperature, color coordinate and thermal stability of complexes were analyzed from the perspective of energy transfer, so as to explore the influence of the first ligand on fluorescence performance of europium complexes. The results showed that the fluorescence of Eu(TTA)₃TPPO was the strongest, while the fluorescence of Eu(TMBA)₃(TPPO) was the weakest.

摘要

使用 Eu ₂ O ₃作为铕的来源，无水乙醇作为溶剂体系，亚甲基苯甲酰（DBM），2-噻吩三氟丙酮（TTA），1-（4-叔丁基苯基）-3-（4-甲氧基苯基）-1,3-丙二酮以(阿伏苯宗)和2,4,6-三甲基苯甲酸(TMBA)为第一配体,三苯基膦(TPPO)为第二配体,通过沉淀反应成功制备了铕(III)三元稀土的四种配合物。样品通过绝对量子效率仪（DQE）、荧光光谱（FS）、傅里叶变换红外光谱（FT-IR）和热重差示扫描量热法（TG-DSC）进行表征。第一配体变化对荧光强度、荧光量子效率、色温、从能量转移的角度分析配合物的色坐标和热稳定性，探讨第一配体对铕配合物荧光性能的影响。结果表明，Eu(TTA)的荧光₃ TPPO的荧光最强，而Eu(TMBA) ₃ (TPPO)的荧光最弱。