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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
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