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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 by1 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. 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 6 mol / L. Analysis by1H NMR showed that the imidazolyl N-H could be hydrogen-bonded with added fluoride anions, and results in the difference of colors.