Azo linked thiourea based effective dual sensor and its real samples application in aqueous medium

- R1 detects F−, AcO− and Cd2+ ions in aqueous medium at nanomolar levels.
- R1 shows colorimetric, UV-vis and fluorescent response on interaction with analytes.
- The anion interaction with R1 was studied using 1H NMR titration.
- R1 utilized for the detection of fluoride in tooth paste and mouthwash.