合成了一种含吡唑啉酮的三脚架结构化合物-1,1,1-三{1′-[2′-氧杂-5′-氧代-5′-(1″-苯基-3″-甲基吡唑啉酮-4″-基)戊基]}丙烷(H3L)及其7个稀土配合物. 通过元素分析、摩尔电导、质谱、红外光谱、核磁共振谱、荧光光谱等对H3L及其稀土配合物的组成及性质进行了表征. 分析结果表明:H3L的分子式为C45H50N6O9, 配合物的组成比为REL*0.5H2O (RE=La, Sm, Eu, Gd, Tb, Dy, Yb); 该三脚架形配体分别以醚氧、烯醇氧及吡唑酮环上的羰基氧与稀土离子进行配位, 形成内配型配合物. 荧光光谱分析表明SmL*0.5H2O, EuL*0.5H2O, TbL*0.5H2O, DyL*0.5H2O配合物具有三价稀土离子的特征线状荧光, 其中TbL*0.5H2O的荧光强度最强, 表明T(配体)→5D4(Tb)能级更为匹配, 从而进行分子内能量有效传递; 由EuL*0.5H2O的荧光光谱图形推测, Eu3+离子在该配合物中处于非对称中心.
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