A tripodal receptor bearing phenol as a hydrogen bond donor site and azo dye as the signaling subunit was synthesized. The receptor had a high binding affinity for CN- as signaled by the change in the color of a solution of sensor 4 upon addition of CN-. Using UV-Vis spectroscopy, the system can be used to quantify 0-19 × 10-5 mol L-1 of CN-, and the sensor was found to successfully function in the presence of other anions.
Bibliographical noteFunding Information:
This work was supported by the India–Korea Joint Program of Cooperation in Science &Technology (2011-0027710), by an ISIRD grant from IIT Ropar, and by CBMH.
All Science Journal Classification (ASJC) codes
- Drug Discovery
- Organic Chemistry