【摘要】 在无水乙醇中,利用Eu3+和Y3+作为中心离子,α-噻吩甲酰三氟丙酮（TTA）和1,10-邻菲啰啉（phen）作为配体制备了一系列共发光稀土配合物Eu_xY_1-x（TTA）3phen,并对TTA和Eu_xY_1-x（TTA）3phen进行了红外表征。掺杂钇的铕配合物与没掺杂钇相比,荧光绝对量子产率和平均寿命都发生了很大变化,随着钇含量的增大,Eu_xY_1-x（TTA）3phen的荧光绝对量子产率先增大,然后减小,而平均寿命则以波动方式逐渐减小,说明钇的掺杂改变了Eu_xY_1-x（TTA）3phen的分子微观结构,从而改变了Eu_xY_1-x（TTA）3phen的能量传递方式。更多还原

【Abstract】 A series of Co-luminescence Eu_xY_1-x（TTA）₃ phen were synthesized in anhydrous ethanol by using Eu³⁺ and Y³⁺ as central ions and 2-Thenoyltrifluoroacetone（TTA） and 1,10-phenanthroline（phen） as ligands. IR spectra of the ligand TTA and Eu_xY_1-x（TTA）₃ phen were determined. The absolute fluorescence quantum yields and average fluorescence lifetimes of europium complexes undergo great change after the europium complexes are doped Y into. With the Y content increasing, the absolute quantum yields of Eu_xY_1-x（TTA）3phen first increase and then decrease, and the average fluorescence lifetimes of Eu_xY_1-x（TTA）₃ phen become shorter in a wave-like pattern. These results indicate that Y-doped results in intramolecular microstructure change of Eu_xY_1-x（TTA）₃ phen, which results in change of intramolecular energy transfer system of Eu_xY_1-x（TTA）₃ phen.更多还原