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以2-二苯胺羰基苯甲酸(L)为第一配体,咪唑并[5,6-f]邻菲罗啉(IP)为第二配体,合成出新型稀土铕、铽三元配合物。采用元素分析、红外光谱、紫外-可见光谱对配体和配合物的结构进行了表征。红外光谱分析表明配合物中的稀土离子与第一配体L中的氧原子以及第二配体IP中的氮原子进行了配位。紫外光谱表明配合物主要是由第一配体L吸收能量。通过荧光光谱、荧光量子效率和荧光寿命研究了配合物的荧光性能,结果显示:两种配合物均表现出稀土离子的特征发射,且配合物的荧光量子效率和荧光寿命与发光强度成正比,配合物Tb(L)3IP的各项荧光性能均优于Eu(L)3IP。
A novel rare earth europium and terbium ternary complex was synthesized with 2-diphenylaminocarbonylbenzoic acid (L) as the first ligand and imidazo [5,6-f] phenanthroline (IP) as the second ligand . The structures of the ligands and complexes were characterized by elemental analysis, IR and UV-Vis spectra. IR spectroscopy showed that the rare earth ions in the complex were coordinated with the oxygen atoms in the first ligand L and the nitrogen atoms in the second ligand IP. UV spectroscopy showed that the complex is mainly absorbed by the first ligand L energy. The fluorescence properties of the complexes were studied by fluorescence spectroscopy, fluorescence quantum efficiency and fluorescence lifetime. The results showed that both complexes showed the characteristic emission of rare earth ions, and the fluorescence quantum efficiency and fluorescence lifetime of the complexes were directly proportional to the luminescence intensity. All the fluorescence properties of Tb (L) 3IP were better than that of Eu (L) 3IP.