Turn-on fluorescence detection of specific inorganic anions by Zr(Ⅳ)-MOF with amino-functional group

作     者：Jing Dong Shi-Qing Wang Xiao-Yu Zhang Zi-Qing Huang Xiu-Du Zhang Wei-Yin Sun 

作者机构：Coordination Chemistry InstituteState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023China Scientific Research InstituteNanjing Tech UniversityNanjing 211816China College of Chemistry and Materials ScienceKey Laboratory of Functional Molecular Solids Ministry of EducationAnhui Laboratory of Molecule-Based MaterialsAnhui Key Laboratory of Functional Molecular SolidsAnhui Normal UniversityWuhu 241002China 

出 版 物：《Tungsten》 (钨科技（英文）)

年 卷 期：2023年第5卷第2期

页      面：217-224页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China (grant No.22171131) for financial support of this work supported by a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions 

主　　题：Zr(IV)framework UiO-66-NH_(2) Anions Sensing Turn-on fluorescence 

摘      要：Inorganic anions such as phosphates and carbonates are essential in the natural system and it is important for the detec-tion of such *** this work,the fluorescence sensing capacity of Zr(IV)framework with an amino-functional group,namely UiO-66-NH_(2),towards specific inorganic anions was investigated in aqueous *** results revealed that the fluorescence emission intensity of UiO-66-NH2 could be strongly enhanced by phosphate and carbonate anions including HPO_(4)^(2-),H_(2)PO_(4)^(-),PO_(4)^(3-),P_(2)O_(7)^(4-),HCO_(3)^(-)and CO_(3)^(2-),implying its sensing capacity towards phosphate and carbonate ***,fluorescence titration experiments exhibit that the emission intensity enhancement ratio depends linearly on the concentration of anions,suggesting the possibility of quantitative detection of these *** studies suggest that the sensing of UiO-66-NH,towards HPO_(4)^(2-)/PO_(4)^(3-)/P_(2)O_(4)^(-)/HCO_(3)^(-)/CO_(2)-could be ascribed to the collapse of the framework,while that for H_(2)PO_(4)-could be attributed to the adsorption of H,PO4-by UiO-66-NH2 with hydrogen bonding interactions between H,PO4-and the amino group of UiO-66-NH_(2) supported by the different fluorescence response of UiO-66 and UiO-66-NH,towards the anions.