Azocalix[4]arene Strapped Calix[4]pyrrole: A Confirmable Fluoride Sensor |
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| Authors: | Preecha Thiampanya Nongnuj Muangsin Buncha Pulpoka |
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| Institution: | Supramolecular Chemistry Research Unit and Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University , 254 Phayathai Road, Bangkok 10330, Thailand. |
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| Abstract: | A new chromogenic fluoride sensor based on 1,3-di-p-nitrophenylazocalix4]arene-calix4]pyrrole (1) was designed and synthesized. The color of the solution of probe 1 changed upon the addition of any F(-), CH(3)CO(2)(-), PhCO(2)(-), and H(2)PO(4)(-) ions. However, from these ions the highly specific sensing of F(-) is achieved by the addition of Ca(2+) which leads to a color change from light sky blue (of 1·F(-)) back to the original light orange color of 1. |
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