“…The uorescence method has attracted immense attention in biological systems owing to its membrane permeability, high sensitivity and non-destructive detection. [16][17][18][19][20] To date, various uorescent sensors have been constructed to visualize ONOO − in organisms mainly based on hydrazine, 21,22 aketoamide, 23,24 N-phenylrhodol, 25,26 organoselenium, 27,28 organotellurium, 29,30 boronic acid/boronates, 31,32 phenol derivatives, 33,34 double carbon bonds 35,36 and so on. [37][38][39][40] However, some of them exhibited low sensitivity and were susceptible to interference from H 2 O 2 or ClO − due to their similar properties to ONOO − and relevant ROS.…”