| 초록 |
Polymeric probes with dithioacetal units in the side chains were designed and synthesized for the selective and efficient colorimetric sensing of Hg2+ ions in aqueous solutions. In aqueous solution, they exhibited a 30−40 nm red-shift in their absorption maxima upon the addition of Hg2+ ions, accompanied by a change in the color of the solution, from pale yellow to dark red. The sensors have excellent selectivity toward Hg2+ ions over other alkali and transition metal ions. The detection time for Hg2+ ion was finely tuned by a change in the pH of the solution. In particular, it took less than 1 min to complete Hg2+ ion detection at low pH. Given with fast and pH-tunable Hg2+ ion detection abilities, these polymeric probes are expected to offer unique potential platforms for integrating stimuli-responsive water-soluble polymers with tunable sensing behaviors |
