Sulfonate ligand-induced formation of alkali metal-cucurbit[5]uril-based assemblies

Xu, Jing; Wang, Qi; Ge, Wei Wei; Wu, Dong; Redshaw, Carl; Chen, Kai

Abstract

Herein, we report the use of 1,5-naphthalene disulfonic acid (H2NDS) as a structure-directing agent to construct cucurbit[5]uril-based supramolecular assemblies. In order to demonstrate the directing role played by H2NDS. {Q[5]·3[H3O]·3Cl·11H2O} (1) and {Q[5]·H2NDS·13H2O} (2) were separately synthesized by recrystallization of Q[5] from HCl solution in both the absence and the presence of H2NDS. Following the addition of alkali metal cations to the Q[5]-H2NDS system, four novel assemblies with the formulae {[Na2(H2O)2(Q[5])(NDS)0.5]·(NDS)0.5·7H2O} (3), {[K2(H2O)3(Q[5])]·(NDS)·4H2O} (4), {[Rb2(H2O)4(Q[5])]·(NDS)·4H2O} (5) and {[CsK(H2O)5(Q[5])]·(NDS)·4H2O} (6) were obtained. Single-crystal X-ray diffraction studies revealed that all of these metal-containing assemblies have similar general structures to that of 2, with the main differences being the coordination modes of the metal cations in 3-6. Furthermore, relevant experiments revealed that compound 2 can highly selectively detect NFX (norfloxacin) molecules as a ratio type fluorescent probe and also is able to capture acridine red (AR), crystal violet (CV) and methylene blue (MB) from aqueous media and the resulting dye-loaded samples can function as solid fluorescent materials.

Citation

Xu, J., Wang, Q., Ge, W. W., Wu, D., Redshaw, C., & Chen, K. (2023). Sulfonate ligand-induced formation of alkali metal-cucurbit[5]uril-based assemblies. CrystEngComm, https://doi.org/10.1039/d2ce01568d

• Journal Article Type: Article
• Acceptance Date: Feb 2, 2023
• Online Publication Date: Feb 3, 2023
• Publication Date: Feb 3, 2023
• Deposit Date: Feb 4, 2023
• Publicly Available Date: Feb 4, 2024
• Journal: CrystEngComm
• Electronic ISSN: 1466-8033
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1039/d2ce01568d
• Keywords: Condensed Matter Physics; General Materials Science; General Chemistry
• Public URL: https://hull-repository.worktribe.com/output/4192327