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t-DMSI; CyP₆Q[6]; inclusion; fluorescent probe; anion recognition.

The host–guest binding characteristics of cyclopentanocucurbit[6]uril (CyP₆Q[6]) and cyanine dye trans-4-[4-(dimethylamino)styryl]-1-methylpyridinium iodide (t-DSMI) have been studied. The results show that CyP₆Q[6] and t-DSMI form a 1:1 inclusion system, generating strong fluorescence. On this basis, the fluorescent probe t-DSMI@CyP₆Q[6] 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[6].

SI YUAN CHENG¹ XI NAN YANG¹ ZHU TAO¹ LIAN TONG WEI² WEI WEI ZHAO¹ DAO FA JIANG¹ YAN MEI JIN¹ JIE GAO¹ PEI HUA MA¹

1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
2. Guiyang Bewg Water Co. Ltd., Guiyang 550001, China

Published

11 April 2020

Manuscript received

26 September 2019

Manuscript revised

4 December 2019

Accepted

16 December 2019