苯氧乙酸、邻菲啰啉铽-钇配合物的合成、表征及荧光性能(英文)

以苯氧乙酸和邻菲啰啉为配体,不同比例铽钇为中心,在无水乙醇中合成了一系列铽掺钇配合物?素分析和稀土络合滴定推测配合物的组成为TbxY1-x(POA)3phen·1/2H2O(POA-=C6H5OCH2COO-,x=1.0,0.9,0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1)。红外光谱测试表明,苯氧乙酸的羧基氧及苯氧基氧与稀土离子配位。邻菲啰啉的两个氮原子也与稀土离子配位;热分析表明:该系列配合物在274℃附近失去配位水,温度高于576℃发生氧化分解。荧光光谱测试结果表明:该系列配合物都可发出较强的特征荧光,在一定比例范围内,钇可以增强铽的发光,组成为配合物Tb0.7Y0.3(POA)3phen·1/2H2O荧光最强;荧光寿命与荧光强度变化一致。

Synthesis, Characterization and Fluorescence Properties of Y3+ -Doped Terbium Complexes with Phenoxyacetic Acid and 1,10-Phenanthroline

A series of Y3 +-doped terbium complexes with phenoxyacetic acid and 1, 10-phenanthroline were synthesized in anhydrous alcohol. Elemental analysis and rare earth complexometic titration showed that the composition of the complexes are TbxY1-x(POA)3phen·1/2H2O(P O A = C6H5 O CH2C O O-, x = 1. 0,0.9, 0.8,0.7,0.6,0.5, 0.4,0.3,0.2 and 0. 1). The IR absorption spectra indicated that the rare earth ions are bounded with the oxygen atoms of phenoxyacetic acid and phenoxy, and with two nitrogen atoms of 1,10-phenanthroline. Thermogram and thermogravimetric analysis indicated that the complexes release coordinated water at about 274 t and they are stable below 576 t. Fluorescent spectra showed that the fluorescence intensity of the series Tb3 + complexes can be greatly enhanced if some of terbium ions in the complexes are substituted by Y3 +. The fluorescence lifetime of the complexes exhibits the similar feature to the fluorescence intensities.