A novel fluoride ion colorimetric chemosensor based on coumarin

作者：Zhuang, Xiaoqing; Liu, Weimin^*; Wu, Jiasheng; Zhang, Hongyan; Wang, Pengfei

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2011, 79(5): 1352-1355.

DOI：10.1016/j.saa.2011.04.068

• Colorimetric chemosensor
• Anion recognition
• Fluoride sensing
• Coumarin
• Schiff base

A novel visible calorimetric sensor (L-1) with high selectivity for fluoride ion based on coumarin has been synthesized by a simple modification of our earlier report. The chemosensor L-1 shows an obvious color change from yellow to blue upon addition of fluoride ion with a large red shift of 145 nm in acetonitrile, and without interference of other anions such as Cl-, Br-, I-, NO3-, H-2 PO4-, HSO4-, and AcO-. The investigation of H-1 NMR spectrum titration indicates the proposed mechanism is that F- first establishes a hydrogen bonding interaction with L-1, and then the formation of [F-H-F](-) induces deprotonation.

• 出版日期2011-9
• 单位中国科学院理化技术研究所