Cholesteric Chiral Molecular Tweezer for Rapid Detection of F− in Food Samples |
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| Authors: | Zhe Liu Hong Wang Zhu Chen Ying Ye Yuwei Wang |
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| Institution: | 1.College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China; (Z.L.); (Z.C.);2.College of Chemical Engineering, Qinghai University, Xining 810016, China;3.State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China |
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| Abstract: | Chiral cholesteric molecular tweezer 7d was synthesized and its influences on changes in the ultraviolet (UV) and fluorescence spectra of various anions were investigated. The results displayed that molecular tweezer 7d selectively recognized F− ions in dimethyl sulfoxide with a detection limit of 5.14 μmol/L, while other anions had little interference. On this basis, a method for the rapid detection of F− ions by host molecular tweezer 7d was established, and the naked-eye detection of F− was realized through the unique yellow color of the complex solution. According to the determination of F− ions in real food samples, it was proved that the established method had good application prospects in F− ion detection. |
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| Keywords: | cholesteric molecular tweezer fluoride ions naked-eye detection specific recognition food samples |
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