Issue 11, 2021

Translational dynamics of a non-degenerate molecular shuttle imbedded in a zirconium metal–organic framework

Abstract

A new [2]rotaxane molecular shuttle linker based on the binding of a 24-crown-8 ether macrocycle at a benzimidazole recognition site was synthesised. The shuttling dynamics of the linker were studied in solution and the structure confirmed by X-ray crystallography. A multivariate Zr(IV) MOF, UWDM-11, containing the new MIM linker and primary linker tetramethylterphenyldicarboxylate was synthesised and the translational motion of the molecular shuttle studied in the solid state. The use of a 13C enriched MIM linker allowed the dynamics of both activated and mesitylene-solvated UWDM-11 to be elucidated by VT 13C CPMAS SSNMR. The incorporation of mesitylene into the pores of UWDM-11 resulted in a significant increase in the barrier for thermally driven translation of the macrocycle.

Graphical abstract: Translational dynamics of a non-degenerate molecular shuttle imbedded in a zirconium metal–organic framework

Supplementary files

Article information

Article type
Edge Article
Submitted
14 Dec. 2020
Accepted
21 Janv. 2021
First published
02 Febr. 2021
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2021,12, 3944-3951

Translational dynamics of a non-degenerate molecular shuttle imbedded in a zirconium metal–organic framework

B. H. Wilson, L. M. Abdulla, R. W. Schurko and S. J. Loeb, Chem. Sci., 2021, 12, 3944 DOI: 10.1039/D0SC06837C

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