Eu(III)/Gd(III)-HTTA—BA—Phen配合物的合成与荧光性质研究  

Syntheses and Fluorescent Properties of Complexes of Eu(III)/Gd(III) with Benzoic Acid, 2-thienyltrifluoroacetonate and Phenanthroline

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作  者:赵学辉[1] 刘志国[1] 肖细梅[1] ZHAO Xue-hui, LIU Zhi-guo, XIAO Xi-mei (Department of Chemistry, Zhuzhou Teachers College, Zhuzhou, H unan 412007, China)

机构地区:[1]株洲师范高等专科学校化学化工系,湖南株洲412007

出  处:《株洲师范高等专科学校学报》2007年第2期9-12,19,共5页Journal of Zhuzhou Teachers College

基  金:湖南省教育厅基金资助项目(05B075)

摘  要:合成一系列关于Eu(III)/Gd(III)与2-噻酚甲酰三氟丙酮(HTTA)、苯甲酸(BA)和邻菲罗啉(Phen)的配合物,并对这配合物进行元素、红外与荧光光谱分析.结果表明:这些配合物的组成为Eu1-x,Gdx(BA)-(TTA)2Phen(x=0~1),配合物Eu(BA)(TTA)2Phen比配合物Eu(TTA)3Phen具有更宽的激发带,且激发带发生明显的蓝移.说明新的配合物已经生成.共发光Gd^3+离子对配合物Eu1-xGdx(BA)(TTA)2Phen的荧光增强非常明显,最佳Gd^3+离子浓度为0.4(摩尔分数).配合物Eu1-xGdx(BA)(TTA)2Phen荧光增强的主要机理是Eu(BA)(TTA)2Phen与Gd(BA)(TTA)2Phen配合物分子间的能量传递.A series of Eu (III)/Gd (III) complexes of benzoic acid (BA), 2-thienyltrifluoroacetonate (HTTA) and Phenanthroline (Phen) are synthesized. Compositions of these complexes are revealed to be Eu1-xGdx(BA)(TTA)2Phen (x=0-l). Their IR spectra and fluorescent spectra are studied. The fluorescent excitation spectra of these complexs show broader excitation hand and a peak position blue shift than that of Eu(TTA)3Phen corresponding to their formation. The fluorescence enhancement of cofluorescence Gd^3+ ions to the Eu(III) complexes is clear. The optimum concentration of Gd^3+ is 0. 4 (molar fraction). The intermolecular transfer between Gd(BA)(TTA)2Phen and Eu(BA)(TTA)2 Phen appears to be responsible for the fluorescence enhancement of Eu1-xGdx (BA)(TTA)2Phen.

关 键 词:荧光性质  苯甲酸 2-噻酚甲酰三氟丙酮 

分 类 号:O614.33[理学—无机化学;理学—化学]

 

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