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通过分子设计,以吡啶-2,6-二甲酸为起始原料,合成了一种新型双吡唑啉酮吡啶配体:2,6-二(1-苯基4-乙氧羰基-5-吡唑啉酮-3-基)吡啶(H2L)。配体与稀土Eu(Ⅲ)和Tb(Ⅲ)离子成功螯合形成配合物。配体和配合物经FT-IR,1H NMR和元素分析进行表征,并确定配合物组成为RE2L3.4H2O。对配合物的紫外吸收和光致发光性能进行了检测,结果显示Eu(Ⅲ)和Tb(Ⅲ)离子能够有效地被有机配体敏化,发射出高亮、半峰宽狭窄的单色光。研究表明目标配合物能够成为优秀的发光材料。
A novel bispyrazolone pyridine ligand, 2,6-bis (1-phenyl 4-ethoxycarbonyl-5- Pyrazolone-3-yl) pyridine (H2L). Ligand with rare earth Eu (Ⅲ) and Tb (Ⅲ) ions successfully chelate complexes. The ligands and complexes were characterized by FT-IR, 1H NMR and elemental analysis, and the complex was determined to be RE2L3.4H2O. The results showed that Eu (Ⅲ) and Tb (Ⅲ) ions could be effectively sensitized by organic ligands to emit monochromatic light with high brightness and narrow half bandwidth. Research shows that the target complex can be an excellent luminescent material.