“…In contrast, fluorescent-based sensing demonstrates superior sensitivity, high selectivity, portability, and efficiency in sensing analytes, rendering them highly advantageous for the real-time detection of phosgene. 22,23 Over the past few years, researchers have made tremendous progress in the development of fluorescent chemosensors for detecting phosgene. 1,2 Until recently, several chemosensors based on classic fluorophores, such as like coumarins, 24 BODIPY, [25][26][27][28] naphthalimides, [29][30][31][32] and rhodamines, 33,34 were reported.…”