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邻苯二甲酸—邻菲罗啉—铕—铽络合体系的荧光性能研究
引用本文:孙波,赵莹.邻苯二甲酸—邻菲罗啉—铕—铽络合体系的荧光性能研究[J].光谱学与光谱分析,1997,17(2):25-29.
作者姓名:孙波  赵莹
作者单位:北京大学化学系
基金项目:国家自然科学基金,国家教委博士点基金,攀登计划资助
摘    要:波长为365nm的紫外光激发下均可发出特征荧光的邻苯二甲酸-邻菲罗啉-铕和铽固体络合物以机械研磨和化学作用两种方式进行混合,研究了这两系列混合络合物的荧光光谱和红外光谱。结果表明,由于铕、铽之间存在相互影响,其荧光强度变化较大,而荧光发射峰位基本不变。经化学混合后铽对铕的荧光强度有极强的敏化作用,铕对铽具有很强的猝灭作用,并用红外光谱对上述四种络合物体系的结构进行了表征

关 键 词:苯二甲酸  邻菲罗啉  荧光光谱  稀土配合物

FLUORESCENCE STUDIES ON THE MIXED SOLID COMPLEXES OF EUROPIUM TERBIUM 1,10 PHENANTHROLINE PHTHALATE SYSTEMS
B Sun,Y Zhao,D Xu,J Wu,W Zhou,G Xu.FLUORESCENCE STUDIES ON THE MIXED SOLID COMPLEXES OF EUROPIUM TERBIUM 1,10 PHENANTHROLINE PHTHALATE SYSTEMS[J].Spectroscopy and Spectral Analysis,1997,17(2):25-29.
Authors:B Sun  Y Zhao  D Xu  J Wu  W Zhou  G Xu
Institution:Department of Chemistry, Peking University, State Key Laboratory of Rare Earth Materials Chemistry and Applications, 100871 Beijing.
Abstract:The 1,10 phenanthroline phthalate complexes of europium and terbium have been synthesized.Two series of mixed complexes,mechanical ground complexes (series 1) and chemical synthesized with mixed EuCl 3 and TbCl 3 solutions (series 2),have been also prepared.Fluorescence studies on all of the samples were performed.The results of their fluorescence spectra excited by 365nm UV light showed that there are interactions between europium ions and terbium ions in these two kinds of mixed complexes.Their fluorescence intensities strongly changed especially for chemical synthesized mixed complexes,in which the fluorescence intensities of europium ions were greatly sensitized by terbium ions and those of terbium ions were strongly quenched by europium ions.But the peak positions of their emission bands did not shift obviously.The structure of these complexes have been characterized by FT IR spectra.The results suggested that no free COOH groups exist and all of the nitrogen atoms of 1,10 phenanthroline molecules coordinate to rare earth ions in all of these complexes.
Keywords:Complexes of europium and terbium    1  10  phenanthroline    Phthalic acid  Fluorescence spectra    FT  IR spectra
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