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

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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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Publication details

The article was received on 10 Nov 2013, accepted on 23 Jan 2014 and first published on 29 Jan 2014

Article type: Edge Article
DOI: 10.1039/C3SC53113A
Citation: Chem. Sci., 2014,5, 1449-1452

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    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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