Benzoselenadiazole Fluorescent Probes - Near-IR Optical and Ratiometric Fluorescence Sensor for Fluoride Ion

A highly selective and sensitive near-IR optical sensor, benzoselenadiazole based diarylamine (TBS-HN), for fluoride (F-) has been designed and synthesized. TBS-HN also shows turn-on ratiometric fluorescence signaling in the presence of F- by inhibiting the excited state intramolecular proton transfer (ESIPT) processes.