A facile colorimetric and fluorescent cyanide chemosensor: utilization of the nucleophilic addition induced by resonance-assisted hydrogen bond. Issue 5 (4th February 2015)

• Record Type: Journal Article
• Authors: Li, Qiao; Zhang, Jian-hui; Cai, Yi; Qu, Wen-juan; Gao, Guo-ying; Lin, Qi; Yao, Hong; Zhang, You-ming; Wei, Tai-bao
• Is Part Of: Tetrahedron. Volume 71:Issue 5(2015)
• Page Start: 857
• Page End: 862
• Publication Date: 2015-02-04
• Subjects: Resonance-assisted hydrogen bond -- Cyanide -- colorimetric -- Fluorometric -- High selectivity -- Test strip; Chemistry, Organic -- Periodicals; 547.005
• DOI: 10.1016/j.tet.2014.12.047
• Languages: English
• ISSNs: 0040-4020

Abstract

Abstract: A chemosensor (CS) was designed and synthesized by simple method. Dual-channel instant detection of CN − was achieved under acidic conditions. It showed an immediate visible color change from yellow to colorless and blue fluorescence appearance when CN − was added. Colorimetric and fluorometric methods showed the detection limits of CN − were 3.9×10 −8 and 3.1×10 −9 M, respectively. The mechanism of chemosensor reactions with CN − ion was examined using 1 H NMR spectroscopy, FTIR spectroscopy, and DFT calculations. Test strips, which served as convenient and efficient CN − test kits, were fabricated based on the sensor. Graphical abstract: