Single chemosensor for sensing multiple analytes: Selective fluorogenic detection of Cu2+ and Br−. Issue 43 (24th October 2018)

• Record Type: Journal Article
• Authors: Ko, Yoon Gun; Mayank, ; Singh, Narinder; Jang, Doo Ok
• Is Part Of: Tetrahedron letters. Volume 59:Issue 43(2018)
• Page Start: 3839
• Page End: 3844
• Publication Date: 2018-10-24
• Subjects: Tripodal -- Copper -- Bromide -- Fluorescence -- Chemosensor -- Receptor; Chemistry, Organic -- Periodicals; 547.005
• DOI: 10.1016/j.tetlet.2018.09.024
• Languages: English
• ISSNs: 0040-4039

Abstract

Graphical abstract: Highlights: A tripodal receptor R1 was used to explore the selective determination of Cu 2+ . R1 in the presence of Cu 2+ showed a fluorescence turn-on. R1 –Cu 2+ complex showed the selectivity for Br − with a fluorescence turn-off. Abstract: A tripodal receptor R1 with a combination of nitrogen and oxygen-based binding sites was designed and used for the selective determination of Cu 2+ . The fluorescence emission profile of R1 in the presence of Cu 2+ showed a marked enhancement in fluorescence intensity, indicating high selectivity among other metal ions. The R1 –Cu 2+ complex was further explored as a sensor for anion detection. Upon addition of Br −, switching to a fluorescence "off" state was observed. The Br − selectivity of the complex over a wide range of concentrations was observed via titrimetric analysis through changes in the emission spectra.