Salicylimine-Based Colorimetric and Fluorescent Chemosensor for Selective Detection of Cyanide in Aqueous Buffer 


Vol. 34,  No. 7, pp. 1985-1989, Jul.  2013
10.5012/bkcs.2013.34.7.1985


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  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.

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  Cite this article

[IEEE Style]

J. Y. Noh, I. H. Hwang, H. Kim, E. J. Song, K. B. Kim, C. Kim, "Salicylimine-Based Colorimetric and Fluorescent Chemosensor for Selective Detection of Cyanide in Aqueous Buffer," Bulletin of the Korean Chemical Society, vol. 34, no. 7, pp. 1985-1989, 2013. DOI: 10.5012/bkcs.2013.34.7.1985.

[ACM Style]

Jin Young Noh, In Hong Hwang, Hyun Kim, Eun Joo Song, Kyung Beom Kim, and Cheal Kim. 2013. Salicylimine-Based Colorimetric and Fluorescent Chemosensor for Selective Detection of Cyanide in Aqueous Buffer. Bulletin of the Korean Chemical Society, 34, 7, (2013), 1985-1989. DOI: 10.5012/bkcs.2013.34.7.1985.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949