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Showing 1–6 of 6 results
Advanced filters: Author: Fredrik Schaufelberger Clear advanced filters

  • Knots reduce the tensile strength of macroscopic threads and fibres. Now it has been shown that the presence of a well-defined overhand knot in a polymer chain can substantially increase the rate of scission of the polymer under tension, as deformation of the polymer backbone induced by the tightening knot activates otherwise unreactive covalent bonds.

    • Min Zhang
    • Robert Nixon
    • David A. Leigh
    ResearchOpen Access
    Nature Chemistry
    Volume: 16, P: 1366-1372

  • A molecular strand can be knotted and unknotted into three different topologies, depending on the complexing metal ion used (copper or lanthanide or none).

    • David A. Leigh
    • Fredrik Schaufelberger
    • Julien Segard
    Research
    Nature
    Volume: 584, P: 562-568

  • Communications Chemistry is pleased to introduce a Collection of articles on the design and applications of mechanically interlocked molecules. Here, the Guest Editors introduce the topic, outline recent advances in the field, and provide their thoughts for future directions of research.

    • Fredrik Schaufelberger
    • Serena Silvi
    • Jose Berna
    EditorialOpen Access
    Communications Chemistry
    Volume: 8, P: 1-3

  • Interlocking macrocyclic carbon nanomaterials is an exciting way to tune their molecular properties, but all-conjugated catenanes and rotaxanes are extremely challenging to make. Now, fully π-conjugated [2]- and [3]catenanes as well as a [3]rotaxane have been prepared through an ‘active metal template’ approach.

    • Satyajit Das
    • Fredrik Schaufelberger
    News & Views
    Nature Chemistry
    Volume: 15, P: 160-162

  • Reversible nanoscale knotting and unknotting of a molecular strand can be used to control the handedness of helical organizations at macroscopic length scales. Dopant knotted and unknotted strands induce supramolecular helical structures of opposite handedness in achiral liquid crystals, and the left- and right-handed forms can be switched in situ.

    • Nathalie Katsonis
    • Federico Lancia
    • Fredrik Schaufelberger
    Research
    Nature Chemistry
    Volume: 12, P: 939-944

  • Molecular knots are evolving from academic curiosities to a practically useful class of mechanically interlocked molecules, capable of performing unique tasks at the nanoscale. In this comment, the author discusses the properties of molecular knots, and highlights future challenges for chemical topology.

    • Fredrik Schaufelberger
    Comments & OpinionOpen Access
    Communications Chemistry
    Volume: 3, P: 1-4