摘要
通过浸渍法将镧系阳离子Eu^(3+)封装在MOF-5孔道结构中,制备出一种新型Eu^(3+)功能化MOF-5(Eu^(3+)@MOF-5)发光金属有机框架材料。Eu^(3+)@MOF-5在394 nm波长激发下表现出Eu^(3+)特征荧光峰,在有机溶剂及水中具有的良好荧光稳定性,且表现出对Fe^(3+)的良好选择性和抗干扰能力。随着Fe^(3+)逐渐加入,Eu^(3+)@MOF-5荧光发射峰强度逐渐降低,其荧光强度与Fe^(3+)浓度呈线性关系,检测限为1.776×10^(-6) mol·L^(-1),因此Eu^(3+)@MOF-5材料可作为一种高选择性和灵敏的荧光探针检测水溶液中Fe^(3+)离子。
A new type of Eu;functionalized MOF-5 (Eu^(3+)@MOF-5) luminescent metal organic frame material was prepared by dipping method to encapsulate the lanthanide cation Eu;in the MOF-5 pore structure.Eu^(3+)@MOF-5showed the characteristic fluorescence peak of metal ion Eu^(3+)when the wavelength was excited at 394 nm.Eu;@MOF-5 not only had good fluorescence stability in organic solvents and water,but also showed good selectivity to Fe;and anti-interference ability.With the increase of Fe;concentration,the fluorescence emission peak intensity of Eu^(3+)@MOF-5 gradually decreased.The fluorescence intensity had a linear relationship with the Fe;concentration,and the detection limit was 1.776×10^(-6) mol·L^(-1).Eu;@MOF-5 can be used as a highly selective and sensitive fluorescent probe to detect Fe;ions in aqueous solutions.
作者
胡敏
张琼瑶
罗伦
任安俊
郁玉发
徐靖
HU Min;ZHANG Qiong-yao;LUO Lun;REN An-jun;YU Yu-fa;XV Jing(College of Pharmacy,Hubei University of Medicine,Shiyan Hubei 442000,China;Hubei Key Laboratory of Wudang Traditional Chinese Medicine Research,Hubei University of Medicine,Shiyan Hubei 442000,China)
出处
《当代化工》
CAS
2022年第2期327-331,389,共6页
Contemporary Chemical Industry
基金
2017湖北省卫计委项目(项目编号:WJ2017M215)
十堰市科技局项目(项目编号:19Y20)。
关键词
荧光探针
重金属离子
荧光猝灭效应
选择性
Fluorescence probe
Heavy metal ion
Fluorescence quenching effect
Selectivity
