摘要
A new colorimetric and fluorimetric chemosensor for F detection based on 1H-imidazo[4,5-b]phenazine derivative has been designed and synthesized.It shows excellent fluorescent specific selectivity and sensitivity for F^- in DMSO solution.Upon addition of F^- to the solution of probe 1,a remarkable color change from yellow to red could be observed easily by the naked-eye.The detection limit of this probe toward F^- is 6.2× 10 ^-6mol/L.Analysis by^1 H NMR proved that the imidazolyl N–H could be hydrogen-bonded with added fluoride anions,and results in the difference of colors.
A new colorimetric and fluorimetric chemosensor for F detection based on 1H-imidazo[4,5-b]phenazine derivative has been designed and synthesized.It shows excellent fluorescent specific selectivity and sensitivity for F^- in DMSO solution.Upon addition of F^- to the solution of probe 1,a remarkable color change from yellow to red could be observed easily by the naked-eye.The detection limit of this probe toward F^- is 6.2× 10 ^-6mol/L.Analysis by^1 H NMR proved that the imidazolyl N–H could be hydrogen-bonded with added fluoride anions,and results in the difference of colors.
基金
support in part by Natural Science Foundation of the Jiangsu Higher Education Institutions of China (No.13KJB150018)
Natural Science Foundation of Jiangsu Province (No.BK20130926)
Innovation program of Shanghai institute of technical physics of the Chinese Academy of Sciences (No.2013,Q-DX-36,Q-DX-37)
Postgraduate Innovation Fund of Jiangsu Province (No.2013,CXZZ13_0459)
