A study of the supramolecular assembly formed by cucurbit[7]uril and 4-cyanophenol

Yu, Zhi Chao; Lu, Yun; Zhao, Jie; Dai, Jing Jing; Chen, Guo Rong; Shan, Pei Hui; Redshaw, Carl; Tao, Zhu; Xiao, Xin

Abstract

The binding interaction between 4-cyanophenol (4-CY) and cucurbit[7]uril has been studied using 1H NMR spectroscopy, UV–vis absorption spectroscopy, fluorescence spectroscopy and X-ray crystallography. The corresponding absorption and emission spectra obtained in aqueous solution revealed that Q[7] and 4-CY formed a 1:1 host-guest type complex. A single crystal structure was obtained by introducing [ZnCl4]2− and Ca2+ as structural inducers, which revealed that 4-CY was connected to Q[7] or [ZnCl4]2− anion via weak interactions such as hydrogen bonding, C-H···π, ion-dipole, to afford a Q[7]-based supramolecular framework. Interestingly, the framework exhibited a Chinese knot-like structure.

Citation

Yu, Z. C., Lu, Y., Zhao, J., Dai, J. J., Chen, G. R., Shan, P. H., …Xiao, X. (2023). A study of the supramolecular assembly formed by cucurbit[7]uril and 4-cyanophenol. Journal of molecular structure, 1278, Article 134969. https://doi.org/10.1016/j.molstruc.2023.134969

• Journal Article Type: Article
• Acceptance Date: Jan 12, 2023
• Online Publication Date: Jan 14, 2023
• Publication Date: Apr 15, 2023
• Deposit Date: Jan 19, 2023
• Publicly Available Date: Jan 15, 2024
• Journal: Journal of Molecular Structure
• Print ISSN: 0022-2860
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 1278
• Article Number: 134969
• DOI: https://doi.org/10.1016/j.molstruc.2023.134969
• Keywords: Cucurbit[7]uril; 4-Cyanophenol; Host-guest chemistry; Supramolecular assembly
• Public URL: https://hull-repository.worktribe.com/output/4184955