2-乙酰基苯并咪唑缩牛磺酸Schiff碱铽配合物的合成及性质研究  

Synthesis and characterization of terbium complex with taurine and 2-acetylbenzimidazole Schiff base

作　　者：陈冬梅[1,2] 杨一心[2] 

机构地区：[1]天水师范学院生命科学与化学学院,甘肃天水741001 [2]西北大学化学系,陕西西安710069

出　　处：《西北师范大学学报（自然科学版）》2009年第6期77-81,共5页Journal of Northwest Normal University(Natural Science)

基　　金：陕西省科技攻关项目(2008K07-16);陕西省教育厅产业化培育项目(08JC03)

摘　　要：在甲醇溶液中合成了新型2-乙酰基苯并咪唑缩牛磺酸Schiff碱配体及其铽（Ⅲ）配合物,通过元素分析、质谱、核磁共振谱、红外光谱、三维荧光激发和发射光谱进行了分子组成确证及性质研究.结果表明,铽（Ⅲ）配合物组成为Tb2L3（NO3）3（L=C11H12N3O3S）,该配合物的荧光除受中心离子微扰的配体发光外,还有明显的中心Tb^3＋离子窄带发射,在220.0～350.0 nm（最佳激发波长为320.0 nm）激发时,发射中心Tb^3＋离子的特征窄带荧光;在350.0～540.0 nm（最佳激发波长为410.0 nm）激发时,产生550.0 nm的发射谱线;在波长为860.0 nm的锐光激发下,发射490.0 nm的上转换荧光.The terbium（Ⅲ） complex and a new Schiff base ligand by 2-acetylbenzimidazole and taurine have been synthesized in methyl alcohol solution.Their structures and properties are confirmed by element analysis,mass spectrometry,IR spectra,^1HNMR spectra,three-dimensional fluorescence excitationand emission spectra.The results show that the composition of Tb（Ⅲ） complex is Tb2L3（NO3）3（L=C11H12N3O3S）.Fluorescence of the complex in addition to the ligand luminescence which perturbed by the center of Tb^3＋ ion,there is obviously the Tb^3＋ ion narrow-band emission. At 220. 0 -350.0 nm （the optimal excitation wavelength is 320.0 nm） excitation light, the characteristics of Tb^3＋ ion narrow-band fluorescence is emitted; at 350.0 - 540.0 nm excitation zone （the best excitation wavelength is 410.0 nm）, the complex is stimulated to produce a wavelength of 550. 0 nm emission spectrum; in the sharp light of 860. 0 nm excitation, it emits 490.0 nm up-conversion fluorescence.

关 键 词：2-乙酰基苯并咪唑缩牛磺酸Schiff碱 稀土配合物 三维荧光激发和发射光谱 上转换荧光 

分 类 号：O614.341[理学—无机化学]