Abstract
Fluoride is important to explore because it plays important roles in nature and biological processes. To accomplish selective F- sensing in aqueous solution, a nanochannel modified with 1,3-dipropargylaza-p-tert-butyl calix[4]crown (C4CE) was designed on the basis of hydrogen-bonding interactions. The nanodevice not only exhibits high selectivity for F-, even in serum, but also shows the useful property of recyclability.
Highlights
Anions exist widely in living organisms and play essential roles in nature and biological processes.1 Among anions, FÀ is of great importance to our health because of its duplicitous nature.2 As is known to all, uorine is a required trace element in the human body
Most of the probes were used for FÀ sensing in organic solution7 or mixed organic–aqueous solution,8 and suffered from interference with other anions, which greatly limits the scope of their application
A device for FÀ sensing with the advantages of simplicity and high selectivity in aqueous solution, especially in complicated biological samples, is still absent and urgently needed
Summary
Anions exist widely in living organisms and play essential roles in nature and biological processes.1 Among anions, FÀ is of great importance to our health because of its duplicitous nature.2 As is known to all, uorine is a required trace element in the human body. A er APAM was immobilized on the PI lm, the contact angle increased to 83.7 Æ 2.8 (seen in Fig. S5†), resulting from the hydrophobicity of the APAM, which is one of the reasons for the decrease in current for the APAM-modi ed nanochannel, as discussed above.
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