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A novel colorimetric and ratiometric fluorescent CN− sensor based on Rhodamine B hydrazone derivatives in aqueous media and its application in sprouting potatoes

Abstract

A novel highly selective chemosensor Z based on Rhodamine B hydrazone derivatives was designed and synthesized, which showed both colorimetric and “turn-on” fluorescence responses for CN− in aqueous solution. Results showed that after adding CN− ion in aqueous solution, the chemosensor Z showed a significant color change that is visible to the naked eye from colorless to pale-yellow, and produced a strong green fluorescence rapidly. The Probe can distinguish CN− by deprotonation and intramolecular charge transfer (ICT) mechanisms, as evidenced by 1H-NMR titration and DFT calculations. In addition, the detection limit of the fluorescence response of the sensor to CN− is 5.81 ×10-8 M which was measured by titration. The chemosensor Z has been successfully used to detect CN− in sprouting potatoes. Z-containing test strips have also been prepared that can be used as colorimetric means for CN− detection in potential applications.

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Publication details

The article was received on 03 Apr 2018, accepted on 28 Jul 2018 and first published on 09 Aug 2018


Article type: Paper
DOI: 10.1039/C8NJ01612G
Citation: New J. Chem., 2018, Accepted Manuscript
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    A novel colorimetric and ratiometric fluorescent CN− sensor based on Rhodamine B hydrazone derivatives in aqueous media and its application in sprouting potatoes

    C. Long, J. Hu, P. Ni, Z. Yin and Q. Fu, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ01612G

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