Light-controlled receptors for environmentally and biologically relevant anions

A tuning fork-shaped bisbenzothiazole derivative as a pH-responsive digital fluorescent probe and its ex vivo evaluation

“…15,37 Novel heterocycles are extensively investigated for a wide range of functions in the areas of sensors, switches, smart electrical and optical devices, etc. 38–40 Among optical probes for pH, although both colorimetric and fluorometric probes for pH are available in the literature, 7,16 most of them can either produce a colorimetric or fluorometric signal and are not available to monitor a 1–12 pH range. 7,16 In a first of its kind, we have developed a dual-modal i.e.…”