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制备和表征了2,5-二甲基三联苯-4’,4’’-二甲酸稀土(Tb~(3+)、Eu~(3+)、Tb~(3+)/Eu~(3+)共掺)配合物。通过荧光光谱可知,使用2,5-二甲基三联苯-4’,4’’-二甲酸作为配体时,Eu~(3+)与Tb~(3+)均能有效发出特征光,将Eu~(3+)与Tb~(3+)共掺,稀土离子发光得到增强。这是由于:1)Tb~(3+)向Eu~(3+)发生能量传递,2)Eu~(3+)猝灭效应减弱。通过调节不同浓度配比的Tb~(3+)与Eu~(3+),可以使配合物的发光从红光变化到绿光,并可以得到发出白光的配合物。发出接近白光的配合物为(Eu0.001Tb0.999)2(TDDA)3(H2O)6,样品色温达到了5199K,显色指数82%。这一稀土配合物可作为单一荧光粉应用于显示、照明等领域。
(Tb 3+, Eu 3+, Tb 3+ / Eu 3 (3+)) were prepared and characterized +) Co-doped) complexes. The fluorescence spectra show that Eu 3+ and Tb 3+ can emit characteristic light effectively when using 2,5-dimethyltrisphenyl-4 ’, 4 "-dicarboxylic acid as the ligand, Eu (3+) and Tb ~ (3+) co-doped, rare earth ions were enhanced luminescence. This is due to: 1) the energy transfer from Tb 3+ to Eu 3+, and 2 the reduction of Eu 3+ quenching. By adjusting the concentration of Tb ~ (3+) and Eu ~ (3+), the luminescence of the complex can be changed from red light to green light, and the white light emitting complex can be obtained. (Eu0.001Tb0.999) 2 (TDDA) 3 (H2O) 6, the color temperature of the sample reached 5199K and the color rendering index was 82%. This rare earth complex can be used as a single phosphor for display, lighting and other fields.