Selective Chemosensing of Hg 2+ Ions by Diazatetrathia-crown Ether Having Nitrobenzoxadiazolyl Subunits

A diazatetrathia crown ether derivative that has two appended nitrobenzoxadiazolyl moieties showed selective OFF-ON type fluoroionophoric signaling properties toward Hg2+ ions over other transition metal ions. The compound also exhibited a pronounced chromogenic behavior toward Hg2+ ions by changing...

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Published in:Bulletin of the Korean Chemical Society 2006, Vol.27 (10), p.1553-1556
Main Authors: Kim, So-Hee, Youn, Na-Jin, Park, Ji-Yeon, Choi, Myung-Gil, Chang, Suk-Kyu
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Youn, Na-Jin
Park, Ji-Yeon
Choi, Myung-Gil
Chang, Suk-Kyu
description A diazatetrathia crown ether derivative that has two appended nitrobenzoxadiazolyl moieties showed selective OFF-ON type fluoroionophoric signaling properties toward Hg2+ ions over other transition metal ions. The compound also exhibited a pronounced chromogenic behavior toward Hg2+ ions by changing the solution color from light orange to yellow, which can easily be detected with naked-eye. The detection limit for the analysis of Hg2+ ions in 90% aqueous acetonitrile was found to be 4.8??10-6 M, which suggests that the compound may be used as a chemosensor for analyzing sub-millimolar Hg2+ ions in aqueous environments.
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title Selective Chemosensing of Hg 2+ Ions by Diazatetrathia-crown Ether Having Nitrobenzoxadiazolyl Subunits
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