Anion receptor based on thiourea: via hydrogen bonding interaction and efficient deprotonation |
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| Authors: | Hongyan Su Hai Lin Zun-Sheng Cai Huakuan Lin |
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| Institution: | 1. Department of Chemistry, Nankai University, Tianjin, 300071, People’s Republic of China
2. Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin, 300071, People’s Republic of China
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| Abstract: | A new thiourea-based receptor through Schiff-based condensation of 8-hydroxyqui nolino-7-aldehyde and a phenylthiosemicarbazide was easily obtained. This novel sensor shows strong binding affinity for acetate, fluoride and phosphate ions through efficient deprotonation. We make an in-depth investigation on its anion binding prosperities and deprotonation process through Fluorescence, UV–vis and 1H NMR titration experiments. Moreover, we propose the anion recognition process by assuming the existence of three-step equilibria. |
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