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A highly sensitive naked-eye fluorescent probe for trace hydrazine based on 'C-CN' bond cleavage

Abstract

In this work, a colourimetric and ratiometric fluorescent probe, 2,3-bis(((E)-4-(diethylamino)-2-hydroxybenzylidene)amino)maleonitrile (DHM), was developed based on N2H4-induced bond cleavage. Two cyanide groups of DHM applied to sense hydrazine (N2H4) for the first time, which was demonstrated by 1H NMR and HRMS spectra. The specific 'C-CN' bond cleavage induced by N2H4 showed an excellent fluorescence ratiometric behavior and a visible colourimetric change from purple to yellow. Meanwhile, it showed a low detection limit of 58.1 nM (1.65 ppb), which was far below the safety level (10 ppb) set by the U.S. EPA. Moreover, the probe was successfully employed for the quantitative detection toward N2H4 in real water samples.

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Publication details

The article was received on 25 Jun 2018, accepted on 03 Aug 2018 and first published on 06 Aug 2018


Article type: Paper
DOI: 10.1039/C8AN01161C
Citation: Analyst, 2018, Accepted Manuscript
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    A highly sensitive naked-eye fluorescent probe for trace hydrazine based on 'C-CN' bond cleavage

    H. Xu, Z. Huang, Y. Li, B. Gu, Z. Zhou, R. Xie, X. Pang, H. Li and Y. Zhang, Analyst, 2018, Accepted Manuscript , DOI: 10.1039/C8AN01161C

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