苯基乙酰甲基亚砜与重稀土高氯酸配合物的合成、表征及铽(Ⅲ)配合物光致发光

Synthesis and Characterization of Phenyl-Acetylmethylene Sulfoxide Complexes with Heavy Rare Earth and Fluorescence Spectrum of Tb(Ⅲ) Complex

合成了六种重稀土高氯酸盐与苯基乙酰甲基亚砜(L)的配合物RE(C lO4).L5.2H2O(RE=T b,D y,E r,Tm,Y b,Y),该系列配合物可溶于水,红外光谱及摩尔电导表明,配体通过亚砜基团上的氧原子与稀土离子配位,羰基氧不参与配位,三个高氯酸根离子有两个在内界与稀土离子配位,另一个在外界不参与配位。测定了配体的磷光光谱,对配合物进行了元素分析、热重等表征。荧光激发和发射光谱测定结果表明:铽(Ⅲ)配合物的发光机理属于M→M发光[1]。

Six solid complexes of phenyl- acetylmethylene sulfoxide （L）with heavy rare earth （Tb ,Dy ,Er ,Tm ,Yb ,Y）have been synthesized and characterized. Elemental analysis and mole conductivities show that the complexes have a composition of RE（ClO4）3 · L5· 2H2O,two ClO4-anions coordinated with rare earth ions and the other did not. IR spectra suggested the ligand coordinated with RE^3＋ by oxygen atom in sulfinyl group, the oxygen atom in carbonyl group did not bond. The phosphorescence and TGA of ligand and complexes were determined. Fluorescence spectra indicated Tb（ Ⅲ ） complex with the sulfoxide has strong fluorescence. All the complexes has good solubility.