Novel Receptor for the Rapid Reaction and Colorimetric Detection of HSO3- in Aqueous Solutions |
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| Authors: | YANG Wen-long LI Qiao WEI Tai-bao ZHANG You-ming LIN Qi SHI Bing-bing ZHANG Peng |
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| Affiliation: | Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China |
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| Abstract: | A novel high-yield Schiff base was designed and synthesized as an anion receptor that specifically select HSO3- anions in aqueous solutions of H2O/DMSO(15:85, volume ratio), which can be detected via colorimetry under direct visualization. The sensor exhibited different results for other anions, such as F-, Cl-, Br-, I-, H2PO4-, AcO-, HSO4- and ClO4-. The changes in the UV-Vis spectra also show the specific recognition of HSO3-, rather than similar anions H2PO4- and HSO4- in the same aqueous solution. The detection limit of HSO3- was 1×10-6 mol/L. |
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| Keywords: | Bisulfite anion sensor 2-Aminobenzimidazole Aqueous solution Single recognition Colorimetry |
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