Twisted cucurbit[14]uril: a new type of CTE macrocycle for Fe sensing

Zhang, Wei; Luo, Yang; Yang, Mao Xia; Lin, Wen Hao; Redshaw, Carl; Ni, Xin Long; Huang, Ying; Tao, Zhu; Xiao, Xin

Abstract

Clustering-triggered emission (CTE) luminophores have aroused great attention given they are unconventional luminescence compounds without significant conjugation. In this work, the luminescence phenomenon of twisted cucurbit[14]uril (tQ[14]) is reported for the first time, and reveals it to be a new CTE compound. We systematically studied the luminescence characteristics and mechanism of tQ[14] in formic acid, and confirmed that the clustering emission of tQ[14] arises via multiply n-π* interactions and hydrogen bonding. We then demonstrated the potential application of this system as an Fe3+ sensor, and the detection of limit (LOD) was found to be 1.71 × 10−5 M. This work not only reveals new characteristics and the mechanism of the clustering emission of tQ[14], but also provides new insights into how to utilize the clustering emission of tQ[14] for the construction of new types of macrocyclic luminescence systems.

Citation

Zhang, W., Luo, Y., Yang, M. X., Lin, W. H., Redshaw, C., Ni, X. L., Huang, Y., Tao, Z., & Xiao, X. (2022). Twisted cucurbit[14]uril: a new type of CTE macrocycle for Fe sensing. Microchemical journal, 178, Article 107364. https://doi.org/10.1016/j.microc.2022.107364

• Journal Article Type: Article
• Acceptance Date: Mar 4, 2022
• Online Publication Date: Mar 11, 2022
• Publication Date: Jul 1, 2022
• Deposit Date: Mar 12, 2022
• Publicly Available Date: Mar 12, 2023
• Journal: Microchemical Journal
• Print ISSN: 0026-265X
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 178
• Article Number: 107364
• DOI: https://doi.org/10.1016/j.microc.2022.107364
• Keywords: Spectroscopy; Analytical Chemistry
• Public URL: https://hull-repository.worktribe.com/output/3947885