Issue 11, 2021
From the journal:

Chemical Science

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

Benjamin H. Wilson,a   Louae M. Abdulla,a   Robert W. Schurko ORCID logo *bc  and  Stephen J. Loeb ORCID logo *a  

* Corresponding authors

a Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada
E-mail: loeb@uwindsor.ca

b Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, USA

c National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA

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

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Article information

DOI
https://doi.org/10.1039/D0SC06837C
Article type
Edge Article
Submitted
14 Dec 2020
Accepted
21 Jan 2021
First published
02 Feb 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

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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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