A coumarin-based fluorescent and colorimetric chemosensor for rapid detection of fluoride ion

作者：Ma, Liulei; Leng, Taohua; Wang, Kai; Wang, Chengyun^*; Shen, Yongjia; Zhu, Weihong^*

来源：Tetrahedron, 2017, 73(10): 1306-1310.

DOI：10.1016/j.tet.2017.01.034

• Coumarin
• Thiosemicarbazone
• Fluorescent probe
• Fluoride anion

A novel coumarin-based compound 1 featuring thiosemicarbazone as binding unit, was reported as a colorimetric and fluorescent probe for the detection of fluoride anion. The addition of F- to a solution of probe 1 in tetrahydrofuran resulted in evident naked-eye color change from green-yellow to orange-red under daylight and obvious fluorescence quenching within 3 s. And the detection limit toward F- was calculated to be as low as 2.16 x 10(-7) mol/L.H-1 NMR titrations proved that the interaction between 1 and fluoride ion: hydrogen bond at low fluoride ion concentration, deprotonation at high fluoride ion concentration. Besides, it exhibited highly sensitivity and selectivity for F- over other examined ions (Cl-, Br-, r, Aco(-), NO3-, HSO-4, H2PO(4)(-)) in tetrahydrofuran solution.

• 出版日期2017-3-9
• 单位华东理工大学; 上海市质量监督检验技术研究院