Detection of the Fungicide Dodine by means of Host-Guest Complexation between Cucubit[10]uril and Acridine Orange

Graphical A fluorescent probe based on supramolecular assembly between acridine orange (AO) and cucurbit[10]uril (Q[10]). Subsequent addition of dodine (DD) displaces AO from the Q[10] cavity, and results in a fluorescent output. Results revealed that the system is capable of the selective recognition of DD. The interaction between acridine orange (AO) and cucurbit[10]uril, Q[10] affords the ternary complex 2AO@Q[10]. Subsequent addition of dodine (DD) displaces AO from the Q[10] cavity, and results in a fluorescent output. The effect of 20 different pesticides, as well as a number of common interferents, on the fluorescent output is presented. Results revealed that the system is capable of the selective recognition of DD, with a limit of detection (LOD) for DD of 1.12×10 −7 M.