论文部分内容阅读
合成了一种含线状N4O2配位点的配体1,2-二(6-羧基吡啶-2-甲胺基)乙烷(H2L),通过红外光谱、核磁共振谱对其结构进行了表征.以H2L为配体与Tb(Ⅲ)合成了环状结构的二元配合物和以2,2’-联吡啶(bipy)为第二配体的三元配合物,并通过红外光谱、差热-热重分析和荧光光谱对配合物进行了表征及发光性质研究.结果表明:所有配合物均能发射Tb(Ⅲ)的特征光谱,最强发射峰在545 nm左右,配体极好地敏化了稀土离子的发光.第二配体的引入使三元配合物的荧光强度明显大于二元配合物的荧光强度.
A ligand, 1,2-bis (6-carboxypyridine-2-methylamino) ethane (H2L), containing a linear N4O2 ligand was synthesized and its structure was characterized by IR and 1H NMR .By using H2L as ligand and Tb (Ⅲ), a binary complex with cyclic structure and a ternary complex with 2,2’-dipyridyl (bipy) as the second ligand were synthesized and characterized by FTIR The results show that all the complexes can emit Tb (Ⅲ) characteristic spectrum, the strongest emission peak is about 545 nm, the ligand is excellent Sensitized the luminescence of rare earth ions.The introduction of the second ligand makes the fluorescence intensity of the ternary complex significantly greater than the fluorescence intensity of the binary complex.