Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 8, Issue 18, Pages 4143-4147Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ob00013b
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Funding
- Natural Science Foundation of China (NSFC) [20772073]
- Natural Science Foundation of Shanxi Province [2008011015]
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A new fluorescent probe, rhodamine B derivative (1) bearing an 8-hydroxyquinoline group, was synthesized and displayed highly selective and sensitive Hg2+-amplified absorbance and fluorescence emission above 500 nm in aqueous solution with a broad pH range 4-9. It was found that mercury ions coordinate reversibly to 1 and the spirolactam ring of 1 was opened, forming a 1 : 1 metal-ligand complex. Furthermore, this sensor was applied for in vivo imaging in HeLa cells to confirm that 1 can be used as a fluorescent probe for monitoring Hg2+ in living cells.
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