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Issue 4, 2014
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Probing the mobility of catenane rings in single molecules

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Abstract

Here we demonstrate for the first time the interrogation of a mechanical link made of catenane rings at the single molecule level. We used AFM-based single molecule force spectroscopy to address the mobility of the rings in a catenane unit of the benzylic amide family. To interface the catenane with the AFM probe, we connected a polymer chain to each of the macrocycles of the [2]catenane. Force–extension profiles in different solvents were then recorded. We show that the catenane ring motions can be detected at the single molecule level and that the ring rotation can be locked or unlocked depending on the solvent.

Graphical abstract: Probing the mobility of catenane rings in single molecules

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Supplementary files

Article information


Submitted
10 Nov 2013
Accepted
23 Jan 2014
First published
29 Jan 2014

Chem. Sci., 2014,5, 1449-1452
Article type
Edge Article

Probing the mobility of catenane rings in single molecules

A. Van Quaethem, P. Lussis, D. A. Leigh, A. Duwez and C. Fustin, Chem. Sci., 2014, 5, 1449
DOI: 10.1039/C3SC53113A

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