Mechanically interlocked [c2]daisy chain backbone enabling advanced shape-memory polymeric materials.

ABSTRACT: The incorporation of mechanically interlocked structures into polymer backbones has been shown to confer remarkable functionalities to materials. In this work, a [c2]daisy chain unit based on dibenzo-24-crown-8 is covalently embedded into the backbone of a polymer network, resulting in a synthetic material possessing remarkable shape-memory properties under thermal control. By decoupling the molecular structure into three control groups, we demonstrate the essential role of the [c2]daisy chain crosslinks in driving the shape memory function. The mechanically interlocked topology is found to be an essential element for the increase of glass transition temperature and consequent gain of shape memory function. The supramolecular host-guest interactions within the [c2]daisy chain topology not

SUBMITTER: Zhou SW 

PROVIDER: S-EPMC10894290 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature