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Keywords:

  • adhesion;
  • host–guest interaction;
  • self-healing properties;
  • supramolecular hydrogels
Thumbnail image of graphical abstract

Supramolecular hydrogels formed by a host-guest interaction show self-healing properties. The cube-shaped hydrogels with β-cyclodextrin and adamantane guest molecules mend after being broken. The hydrogels sufficiently heal to form a single gel, and the initial strength is restored. Although contact between a freshly cut and uncut surface does not mend the gels, two freshly cut surfaces selectively mend.