稀土配合物Eu(TTA)_3(TPPO)_2的合成、表征及发光性质研究

Synthesis,characterization and luminescent properties of a rare-earth complex Eu(TTA)_3(TPPO)_2

制备了Eu(TTA)3(TPPO)2二元及三元稀土配合物,通过热重差热分析、红外光谱、紫外光谱和元素分析对配合物的组成、结构进行了表征.研究了配合物溶解性、热稳定性和TPPO第2配体加入对配合物发光性的影响.荧光光谱的研究表明,第2配体的加入能有效地增强铕离子发光强度,配合物具有良好的发光性能,在紫外光激发下显示出Eu3+的特征发射峰,发出很强的红色荧光,是一种有潜在应用前景的红光发光材料.

Rare-earth ternary complexes Eu （TFA）_3 （TPPO）_2 （ HTYA = 2-Thenoyltrifluoroacetone and TPPO = Tri- phenyl phosphine oxide） were synthesized. Their compositions and structures were characterized by TG-DTA ther- mal analysis, IR, UV, element analysis and fluorescence spectra. The influences of solubility, thermal stability and luminescent properties of complexes as well as the addition of TPPO secondary ligands on the fluorescence spec- tra of the binary and ternary complexes were studied. The results showed that the addition of TPPO could effectively increase the luminescence intensity of europium icons. The complexes possessed characteristic emission peaks of Eu^3＋ under UV light excitation and emitted strong good luminescence and showed red fluorescence.