Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 177, Issue -, Pages 997-1002Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.11.080
Keywords
Rhodamine; Phosphonate; Fluorescence; Turn-on; Hg2+; H2O
Funding
- National Science Foundation of China [20972143, 20972130]
- Program for New Century Excellent Talents in University [NCET-11-0950]
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A novel rhodamine-based fluorescent probe 3 was designed and synthesized, which contained a hydrophilic group, were designed as fluoroionophores and chromophores for the optical detection of Hg2+ ions in water with a broad pH span (3-10). As expected, it exhibited high selectivity and sensitivity for Hg2+ over other commonly coexistent metal ions in water. Its selectivity was excellent, and the detection limit was measured to be 0.2 ppm. The significant changes in the fluorescence color could be used for naked-eye detection. Furthermore, fluorescence imaging experiments of Hg2+ ions in living MGC803 cells demonstrated its value of practical applications in biological systems. (c) 2012 Elsevier B.V. All rights reserved.
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