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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 7
BKCSDE 34(7)
July 20, 2013

Title	Salicylimine-Based Colorimetric and Fluorescent Chemosensor for Selective Detection of Cyanide in Aqueous Buffer
Author	Jin Young Noh, In Hong Hwang, Hyun Kim, Eun Joo Song, Kyung Beom Kim, Cheal Kim
Keywords	Cyanide sensing, Colorimetric, Fluorescent, Chemosensor, Schiff base
Abstract	A simple colorimetric and fluorescent anion sensor 1 based on salicylimine showed a high selectivity and sensitivity for detection of cyanide in aqueous solution. The receptor 1 showed high selectivity toward CN− ions in a 1:1 stoichiometric manner, which induces a fast color change from colorless to orange and a dramatic enhancement in fluorescence intensity selectively for cyanide anions over other anions. Such selectivity resulted from the nucleophilic addition of CN− to the carbon atom of an electron-deficient imine group. The sensitivity of the fluorescence-based assay (0.06 μM) is below the 1.9 μM suggested by the World Health Organization (WHO) as the maximum allowable cyanide concentration in drinking water, capable of being a practical system for the monitoring of CN− concentrations in aqueous samples.
Page	1985 - 1989
Full Text	PDF / Supporting Information

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