基于4-(4-甲氧基苯亚甲基氨基)苯甲酸的高选择性的Fe^(3+)荧光传感器  

A Highly Selective Fluorescent Sensor for Fe3+Based on 4-(4-methoxybenzylideneamino) Benzoic Acid

作　　者：张金丹[1] 刘爱荣[1] 梁金丽[1] 李金萍[1] 缪谦[1] 

机构地区：[1]温州大学化学与材料工程学院,浙江温州325035

出　　处：《温州大学学报（自然科学版）》2013年第2期36-44,共9页Journal of Wenzhou University(Natural Science Edition)

基　　金：浙江省自然科学基金(406068)

摘　　要：构建了基于4-(4-甲氧基亚甲基氨基)甲酸(MBABA)荧光化学传感器,用于95%乙醇介质中Fe3+测定.常见金属离共存时,荧光传感器MBABA可以选择性地与Fe3+形成1∶1配合物而使其荧光被明显淬灭,Fe3+对MBABA荧光淬灭常数KSV为4.71×104L mol 1.更强配位剂F–可夺取MBABA-Fe3+配合物中Fe3+,使MBABA荧光恢复到原来强度.法测定Fe3+检测限达2.4×10 6mol L 1,表明MBABA可作为测定Fe3+高灵敏度和专一性荧光传感器.A fluorescent chemosensor based on 4-（4-methoxybenzylideneamino） benzoic acid（MBABA） was constructed for detecting Fe^3＋ in 95% ethanol solution.Fluorescent chemosensor MBABA can selectively coordinate with Fe^3＋under other commonly coexistent metal ions resulting in 1：1 MBABA-Fe^3＋ complex,which causes the fluorescence of MBABA obviously quenched by Fe^3＋.The quenching constant KSVof Fe^3＋ to MBABA is 4.71×104 L mol-1.The fluorescence intensity of MBABA was regained when the metal was removed by a stronger chelating ligand F.The detection limit for Fe^3＋ was as low as 2.4×10^-6 mol L 1,indicating MBABA can be treated as a sensitive and specific fluorescence sensor for Fe^3＋detection.

关 键 词：4-(4-甲氧基亚甲基氨基)甲酸 荧光化学传感器 FE3+ 

分 类 号：O65[理学—分析化学]