| 초록 |
A molecular probe based on the newly exploited aldoxime chemistry was designed for the dual sensing of Hg2+ and F− ions. The probe exhibited a 70 nm red shift in its absorption maximum upon the addition of Hg2+ ions, which was accompanied by a change in the color of the solution from pale yellow to dark violet. Interestingly, Azo-2 also exhibited high sensitivity and selectivity toward F− ions in a DMSO solution, which was achieved by the F− ion-induced deprotonation of oxime-OH and the subsequent formation of an energetically favored HF2− species. A change in the color of the solution from pale yellow to dark red helped detect F− ion visibly. The oxime anion generated by F− in a DMSO solution was reacted with water molecules to return to the original protonated oxime, proving that the entire process is reversible. |
