ZIF-8封装AuNCs荧光传感器用于铁离子的检测  

ZIF-8 Encapsulated AuNCs Fluorescent Sensor for Detection of Iron Ions

作　　者：马品一[1] 刘佳宜 高德江[1] 费强[1] 宋大千[1] MA Pinyi;LIU Jiayi;GAO Dejiang;FEI Qiang;SONG Daqian(College of Chemistry,Jilin University,Changchun Jilin 130012,China)

机构地区：[1]吉林大学化学学院,吉林长春130012

出　　处：《辽宁化工》2024年第3期329-332,共4页Liaoning Chemical Industry

基　　金：国家自然科学基金(项目编号:22004046)。

摘　　要：介绍一个适合于本科教学使用的综合创新实验,设计合成了一种荧光传感器Au NCs@ZIF-8,并将其用于铁离子(Fe^(3+))的检测。MOFs具有高效吸附、聚集检测物的特点,因此选择将Au NCs封装到ZIF-8中,从而实现目标物的定量检测。封装后,由于Au NCs具有AIE特性,所以Au NCs@ZIF-8的荧光强度明显增强。ZIF-8是一种多孔材料,加入Fe^(3+)后,Fe^(3+)能够进入ZIF-8内部,导致Au NCs的荧光被Fe^(3+)猝灭,成功用于实际水样中Fe^(3+)的检测。尽管该实验步骤复杂并涉及新型纳米材料的合成和表征,但它成功地整合了无机化学、分析化学以及材料化学的相关知识,且操作难度适宜。这为提升学生的动手能力和科技前沿理解提供了一次宝贵的机会。In this comprehensive and innovative experiment for undergraduate teaching,a fluorescent sensor,AuNCs@ZIF-8,was designed and synthesized specifically for the detection of iron ions(Fe^(3+)).Leveraging the characteristics of Metal-Organic Frameworks(MOFs)-efficient adsorption and enrichment of analytes,Au Nanoclusters(AuNCs)were encapsulated within ZIF-8,facilitating precise quantification of the target analyte.Following encapsulation,and due to the Aggregation-Induced Emission(AIE)attributes of AuNCs,a significant enhancement in the fluorescence intensity of AuNCs@ZIF-8 was observed.ZIF-8,being a porous material,allows Fe^(3+)to penetrate its structure upon addition,leading to quenching of the fluorescence of AuNCs and subsequently successful detection of Fe^(3+)in actual water samples.While the experimental steps are complex and involve the synthesis and characterization of novel nanomaterials,this study successfully integrates relevant knowledge from inorganic chemistry,analytical chemistry,and materials chemistry,offering an appropriate level of operational difficulty.This experiment thus provides a valuable opportunity for enhancing students'practical skills and understanding of cutting-edge science.

关 键 词：铁离子(Fe^(3+)) 荧光传感器 综合创新实验 金纳米团簇(AuNCs) 金属有机骨架(MOFs) 

分 类 号：O6[理学—化学]