Detection of the pesticide dodine using a cucurbit[10]uril-based fluorescent probe

Lian, Chengjie; Xu, Weitao; Luo, Yang; Zhu, Xinyi; Fan, Ying; Redshaw, Carl; Tao, Zhu; Xiao, Xin

Abstract

In this contribution, a new fluorescent probe is presented which is capable of the selective recognition and determination of dodine (DD) from amongst 14 different pesticides. The system utilizes a simple guest-replacement mechanism, which allows for fluorescence turn-on. The probe is constructed from cucurbit[10]uril (Q[10]) and protonated acridine (MeAD), and makes use of the strong fluorescence ability of MeAD in aqueous solution versus the lack of fluorescence for the homoternary inclusion complex MeAD2@Q[10]. The addition of pesticide DD to an aqueous solution of MeAD2@Q[10] resulted in MeAD displacement and subsequent recovery of the strong fluorescence. Interestingly, the similar addition of a number of other common pesticides (13 others were tested herein) failed to result in the recovery of the fluorescence. 1H NMR spectroscopic studies were employed to investigate the guest-replacement fluorescence turn-on mechanism.

Citation

Lian, C., Xu, W., Luo, Y., Zhu, X., Fan, Y., Redshaw, C., Tao, Z., & Xiao, X. (2021). Detection of the pesticide dodine using a cucurbit[10]uril-based fluorescent probe. Microchemical journal, 167, Article 106309. https://doi.org/10.1016/j.microc.2021.106309

• Journal Article Type: Article
• Acceptance Date: Apr 18, 2021
• Online Publication Date: Apr 22, 2021
• Publication Date: Apr 22, 2021
• Deposit Date: Apr 28, 2021
• Publicly Available Date: Apr 23, 2022
• Journal: Microchemical Journal
• Print ISSN: 0026-265X
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 167
• Article Number: 106309
• DOI: https://doi.org/10.1016/j.microc.2021.106309
• Keywords: Analytical Chemistry; Spectroscopy
• Public URL: https://hull-repository.worktribe.com/output/3760777