Abstract
A new colorimetric receptor 1 for the detection of CN- and F- has been simply developed. Receptor 1 showed selectively colorimetric responses to CN- in a near-perfect aqueous solution and F- in 10% aqueous solution, respectively. An obvious color change of 1 from yellow to colorless was observed for CN- through a nucleophilic addition mechanism, while F- was detected through deprotonating mechanism with a distinct color change from yellow to orange. The binding modes of receptor 1 with two analytes (CN-and F-) were proposed to be 1:1, based on Job plot, 1H NMR titration, and ESI-mass spectrometry analysis. Moreover, the sensing mechanisms for F- and CN- were theoretically supported by DFT and TD-DFT calculation.
| Original language | English |
|---|---|
| Pages (from-to) | 123-132 |
| Number of pages | 10 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 207 |
| Issue number | Part A |
| DOIs | |
| State | Published - Feb 2015 |
Keywords
- Colorimetric
- Cyanide
- DFT calculations
- Fluoride
- Multiple analytes