The host–guest binding characteristics of cyclopentanocucurbituril (CyP6Q) and cyanine dye trans-4-[4-(dimethylamino)styryl]-1-methylpyridinium iodide (t-DSMI) have been studied. The results show that CyP6Q and t-DSMI form a 1:1 inclusion system, generating strong fluorescence. On this basis, the fluorescent probe t-DSMI@CyP6Q has been constructed, and its anion recognition ability has been investigated. In a neutral environment, BF4-, H2PO4 -, and I- elicit obvious specific responses from the probe, since they have stronger binding forces. This probe shows greater sensitivity than the previously reported probe t-DSMI@HMeQ.
Volume 133, 2021
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