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Keywords:

  • crown compounds;
  • gels;
  • molecular recognition;
  • ring-opening polymerization;
  • supramolecular chemistry

Abstract

Thumbnail image of graphical abstract

Responsive supramolecular gels were constructed from crown ether terminated four-arm star poly(ε-caprolactone) (PCL–DB24C8) and dibenzylammonium-terminated two-arm PCL–DBAS (see scheme), exploiting the formation of pseudorotaxane linkages between crown ether and ammonium moieties. The resultant supramolecular gels exhibit thermo- and pH-induced reversible gel–sol transition.