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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 10
BKCSDE 27(10)
October 20, 2006

Title	Selective Chemosensing of Hg²⁺ Ions by Diazatetrathia-crown Ether Having Nitrobenzoxadiazolyl Subunits
Author	So Hee Kim, Na Jin Youn, Ji Yeon Park, Myung Gil Choi, Suk-Kyu Chang*
Keywords	Chemosensor, Fluoroionophore, Hg²⁺ ions, Diazatetrathia-crown ether, Nitrobenzoxadiazolyl subunit
Abstract	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.
Page	1553 - 1556
Full Text	PDF

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