【摘要】 合成了铽 (Tb) 苯甲酸 (L) 邻菲咯啉 (phen)三元配合物 ,并与Tb 苯甲酸的二元配合物相比较 ,研究了它们的发光性质。结果显示 ,第二配体邻菲咯啉的引入并未降低Tb3+ 的发光强度 ,但却使Tb3+ 的荧光寿命明显缩短 ,而且首次发现 ,沉淀晶粒的聚合状态影响三元配合物的发光性质。当晶粒较为分散时 ,三元配合物中Tb3+ 的 5D4 → 7F5的跃迁几率很大 ,显示Tb3+ 特征的绿色荧光。随着晶粒的聚集 ,5D4 7F5的跃迁几率减小 ;而显红色荧光的5D4 → 7F3跃迁几率明显增加 ,结果使铽 苯甲酸 邻菲咯啉三元配合物在紫外灯下显示黄色荧光。同时讨论了三元配合物的谱学性质更多还原

【Abstract】 In this paper, ternary solid complexes of Tb benzioc acid 1,10 phenanthroline have been synthesized. Compared with binary complexes of Tb benzioc acid, their properties were investigated. The results showed that the second ligand phenanthroline enhanced the fluorescence intensities of Tb 3+ , and shortened its fluorescence lifetime, and it was found that the aggregative state influenced the luminescence properties of ternary complexes. When particulates dispersed to a certain degree, the probability of 5D 4→ 7F 5 transition of Tb 3+ was great, so, green fluorescence was observed for the complexes. With the aggregation of particles, the probability of 5D 4→ 7F 5 transition of Tb 3+ decreased, while the probability of 5D 4→ 7F 3 transition increased. Therefore, ternary complexes of Tb benzoic acid 1,10 phenanthroline exhibited yellow fluorescence. In addition, spectroscopic properties of the complexes were investigated.更多还原