A Smartphone-assisted Paper-based Analytical Device for Fluorescence Assay of Hg2+

作     者：YE Jiavven GENG Yijia CAO Fanghao SUN Dan XU Shuping CHANG Jingjing XU Weiqing CHEN Qidan 

作者机构：State Key Laboratory of Supramolecular Structure and MaterialsInstitute of Theoretical ChemistryJilin UniversityChangchun 130012P.R.China School of Chemistry and Environmental EngineeringChangchun University of Science and TechnologyChangchun 130022P.R.China School of Chemical Engineering and New Energy MaterialsZhuhai CollegeJilin UniversityZhuhai 519041P.R.China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2019年第35卷第6期

页      面：972-977页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Supported by the National Natural Science Foundation of China(Nos.21873039,21573087,21573092) the Basic and Applied Basic Research Foundation of Guangdong Province,China(No.2019Al515010596) the 44Three Levels55 of Talent Project of Zhuhai College,Jilin University,China(No.2018TL006) the Science and Technology Innovation Team Project of Zhuhai College,Jilin University,China(No.2018CXKYTD005) 

主　　题：Paper-based analytical device Nitrogen-doped carbon dot Integrated sensing platform Mercury ion 

摘      要：Rapid,efficiency and portable detection systems in low-resource settings with limited laboratory equipment and technical expertise are urgently ***,an integrated platform composed of a paper-based analytical device and a smartphone detection system for Hg^2+ onsite testing was ***-doped carbon dots(N-CDs)were synthesized by a simple hydrothermal method using citric acid as the carbon source and ethanediamine as the nitrogen source,which gave out bright blue fluorescence under the excitation at 350 nm UV light and the absolute fluorescence quantum yield was 17.1%.The fluorescence of the prepared N-CDs can be effectively quenched by Hg^2+.In addition,an external attachment of smartphone for illumination and external light interference was designed to trace the fluorescence signals,and a software application of Android system with simple operation program was developed to perform snapshot and image *** smartphone-assisted detection system was combined with the N-CDs decorated paper chip to achieve the sensitive detection of Hg^2+ in water *** integrated method for reliable sensing of Hg^2+ shows a good linear detection range of 10–800μmol/L(R2=0.9595)with detection limit of 1.07×10^?8 mol/L.