Fluorescent Sensor for Sequentially Monitoring Zinc(II) and Cyanide Anion in Near-Perfect Aqueous Media

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We report a new sensor, 1, for sequentially detecting Zn2+ and CN- based on fluorescence. Sensor 1 was prepared through the reaction of 3-aminobenzofuran-2-carboxamide with 4-diethylaminosalicylaldehyde. Sensor 1 showed a selective "off-on" fluorescent response toward Zn2+, distinguishing Zn2+ from Cd2+. The limit of 1 (0.35 mu M) for monitoring Zn2+ is lower than the World Health Organization (WHO) guideline (76 mu M) for water available for drinking. Importantly, sensor 1 could sense Zn2+ in living cells and aqueous media. In addition, the resulting 1-Zn2+ complex functioned as an efficient "on-off" sensor for CN-. The mechanisms of 1 for detecting Zn2+ and CN- were explained by spectroscopic, spectrometric, and theoretical studies.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-01
Language
English
Article Type
Article
Keywords

EFFECTIVE CORE POTENTIALS; TURN-ON CHEMOSENSOR; COLORIMETRIC CHEMOSENSOR; MOLECULAR CALCULATIONS; SCHIFF-BASE; EMISSION-SPECTROMETRY; HYDROGEN-SULFIDE; HIGH-SENSITIVITY; ACCEPTOR TYPE; ZN2+

Citation

INDUSTRIAL ENGINEERING CHEMISTRY RESEARCH, v.57, no.1, pp.54 - 62

ISSN
0888-5885
DOI
10.1021/acs.iecr.7b03826
URI
http://hdl.handle.net/10203/240230
Appears in Collection
CH-Journal Papers(저널논문)
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