Title of article :
A selective “turn-on” fluorescent sensor for Hg2+ based on “reactive” 7-hydroxycoumarin compound
Author/Authors :
Gao، نويسنده , , Bei and Gong، نويسنده , , Wei-Tao and Zhang، نويسنده , , Qing-Lan and Ye، نويسنده , , Jun-Wei and Ning، نويسنده , , Gui-Ling، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Abstract :
A simple 7-hydroxycoumarin-based compound L1 was rationally designed and synthesized behaving as a highly selective fluorescent sensor for Hg2+ in aqueous media. It shows selective and “turn-on” fluorescence upon addition of Hg2+. Fluorescence titration and 1H NMR investigation reveal that the fluorescence enhancement of L1 upon Hg2+ addition is promoted by Hg2+-induced cyclization of L1 to a more rigid dihydrobenzofuran derivative.
Keywords :
Fluorescence probe , 7-hydroxycoumarin , Hg2+ selectivity , Off-on , aqueous media
Journal title :
Sensors and Actuators B: Chemical
Journal title :
Sensors and Actuators B: Chemical
