Post‐synthesis metal‐organic framework for turn‐on ratiometric fluorescence sensing of UO22+. Issue 9 (6th December 2021)

• Record Type: Journal Article
• Authors: Zhang, Jun; Ren, Yiming; Xia, Tifeng; Du, Yunfeng; Shao, Lang; Tang, Hao; Yang, Shanli
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 648:Issue 9(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-12-06
• Subjects: uranyl ions -- fluorescent sensing -- ratiometric -- turn-on -- MOFs; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.202100337
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract: Uranium is an important and toxic radioactive nuclide, which is usually exist in nature water as uranyl ions. In this work, we developed a rapid sensitive and selective analytical methods for detection uranyl ions in aqueous solution. The Eu 3+ incorporated MOF through post‐synthesis strategy was obtained, which exhibits excellent turn‐on and ratiometric fluorescence sensing ability toward uranyl ions with the limit of detection as low as 3 nM. Moreover, this probe also shows great selectivity towards uranyl ions in the presence of a wide range of environmentally interfering species and good sensing capacity in real water samples. We also discussed the sensing mechanism combine the XPS results and calculations. Abstract :