Abstract
A new fluorescent sensor 1, based on the naphthalimide chromophore and thioether-rich crown receptor, exhibited dual signaling behaviors for Hg(2+) and Ag(+) in aqueous solution. Upon addition of Hg(2+), the fluorescence intensity enhanced in a linear fashion with a quantum yield increase of about 5-fold. Moreover, with the 1-Hg(2+) complex, Ag(+) was easily recognized by a marked fluorescence quenching. The living cells image experiments demonstrate the value of sensor 1 in fluorescent visualization of Hg(2+) ions in biological systems.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Crown Compounds / chemical synthesis
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Crown Compounds / chemistry*
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Environmental Pollutants / analysis*
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Environmental Pollutants / chemistry
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Fluorescent Dyes / chemistry*
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HeLa Cells
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Humans
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Mercury / analysis*
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Mercury / chemistry
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Microscopy, Fluorescence
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Naphthalimides / chemical synthesis
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Naphthalimides / chemistry*
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Silver / analysis*
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Silver / chemistry
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Spectrophotometry, Ultraviolet / methods*
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Sulfides / chemistry*
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Water / chemistry*
Substances
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Crown Compounds
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Environmental Pollutants
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Fluorescent Dyes
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N-propyl-4-(2-(1,4,7,10-tetrathia-13-azacyclopentadecane)ethylamino)-1,8-naphthalimide
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Naphthalimides
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Sulfides
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Water
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Silver
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Mercury