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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


Jing Xu

Qi Wang

Wei Wei Ge

Dong Wu

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Professor Carl Redshaw
Professor of Inorganic Materials Chemistry and REF Lead for Chemistry

Kai Chen


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.


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,

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
Keywords Condensed Matter Physics; General Materials Science; General Chemistry
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