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Two new reversible naphthalimide-based fluorescent chemosensors for Hg(2.)
Gongchun Li1, Guangqin Gao2, Junye Cheng3
1School of Chemistry and Chemical Engineering, Xuchang University, Xuchang, China.
Abstract:
Naphthalimide-based fluorescent probes 1 and 2 were synthesized, and were designed to form probe-Hg complexes through Hg(2+) ions coordinated to the amide group and imidazole group. They showed high sensitivity and were selective 'naked-eye' chemosensors for Hg(2+) in phosphate buffer. The fluorescence of compounds 1 and 2 could be quenched up to 90% by the addition of Hg(2+) . Reversible probes can detect Hg(2+) ions over a wide pH range (7.0-10.0). Copyright © 2015 John Wiley & Sons, Ltd.
