Superior thermoelasticity and shape-memory nanopores in a porous supramolecular organic framework.

ABSTRACT: Flexible porous materials generally switch their structures in response to guest removal or incorporation. However, the design of porous materials with empty shape-switchable pores remains a formidable challenge. Here, we demonstrate that the structural transition between an empty orthorhombic phase and an empty tetragonal phase in a flexible porous dodecatuple intercatenated supramolecular organic framework can be controlled cooperatively through guest incorporation and thermal treatment, thus inducing empty shape-memory nanopores. Moreover, the empty orthorhombic phase was observed to exhibit superior thermoelasticity, and the molecular-scale structural mobility could be transmitted to a macroscopic crystal shape change. The driving force of the shape-memory behaviour was elucidated in t

SUBMITTER: Huang YG 

PROVIDER: S-EPMC4865851 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature