A novel urea-derived fluorescent sensor for highly selective and sensitive detection of Fe3+. Issue 30 (27th July 2016)

• Record Type: Journal Article
• Authors: Wu, Xingxing; Zhang, Shanshan; Niu, Qingfen; Li, Tianduo
• Is Part Of: Tetrahedron letters. Volume 57:Issue 30(2016)
• Page Start: 3407
• Page End: 3411
• Publication Date: 2016-07-27
• Subjects: Fluorescent sensor -- Urea derivative -- Metal ion -- Fe3+ -- Quenching; Chemistry, Organic -- Periodicals; 547.005
• DOI: 10.1016/j.tetlet.2016.06.089
• Languages: English
• ISSNs: 0040-4039

Abstract

Graphical abstract: Highlights: A reversible and fast-responsive urea-based fluorescent sensor for Fe 3+ was synthesized. Sensor MDSU displayed a high selectivity and sensitivity for Fe 3+ . This sensor can detect Fe 3+ in real time in aqueous solution. The low detection limit was 1.816 × 10 −7 M. Abstract: A novel urea-derived fluorescent sensor MDSU for Fe 3+ was designed and synthesized. Its sensing behavior to metal ions was investigated by absorption and fluorescence spectra. In DMSO/H2 O (1:1, v/v) solution, sensor MDSU showed a highly selective and sensitive recognition to Fe 3+ over other competitive metal ions. This sensor formed a 1:1 complex with Fe 3+ and displayed fluorescence quenching. Moreover, sensor MDSU can rapidly detect Fe 3+ in real time with a lower detection limit of 1.816 × 10 −7 M.