A highly selective and sensitive dual-channel chemosensor for cyanide based on sulfahydrazone derivative |
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| Authors: | Yan-Li Leng Jian-Hui Zhang Qiao Li You-Ming Zhang Qi Lin Hong Yao |
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| Affiliation: | 1. Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Gansu Key Laboratory of Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, China;2. Department of Applied Chemical Engineering, Lanzhou Resources &3. Environment Voc-Tech College, Lanzhou, Gansu, China;4. Department of Applied Chemical Engineering, Lanzhou Resources & |
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| Abstract: | A colorimetric and fluorescent cyanide probe bearing naphthol and sulfahydrazone groups has been designed and synthesized. This structurally simple probe displays a rapid response and high selectivity for cyanide in DMSO/EtOH (v/v = 2:8) solution. The addition of CN? to the sensor p-toluenesulfonyl-2-hydroxy-1-naphthylhydrazone (L3) induced a remarkable color change from pale-yellow to yellow, and green fluorescence changed to yellow. The 1H NMR titration and DFT calculations suggested that the selective sensing process is based on a nucleophilic addition reaction of cyanide to imine. Test strips based on sensor L3 were fabricated, which could act as a convenient and efficient test kit to detect CN? for “in-the-field” measurements. |
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| Keywords: | Cyanide(CN?) chemosensor nucleophilic addition DFT |
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