Journal
ORGANIC LETTERS
Volume 14, Issue 16, Pages 4050-4053Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol301684r
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Funding
- Chulalongkorn University
- Thailand Research Fund [RSA/06/2545, RTA 5380003]
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A new chromogenic fluoride sensor based on 1,3-di-p-nitrophenylazocalix[4]arene-calix[4]pyrrole (1) was designed and synthesized. The color of the solution of probe 1 changed upon the addition of any F-, CH3CO2-, PhCO2-, and H2PO4- ions. However, from these ions the highly specific sensing of F- is achieved by the addition of Ca2+ 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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