Guest-mediated phase transitions in a flexible pillared-layered metal-organic framework under high-pressure.

ABSTRACT: The guest-dependent flexibility of the pillared-layered metal-organic framework (MOF), Zn₂bdc₂dabco·X(guest), where guest = EtOH, DMF or benzene, has been examined by high-pressure single crystal X-ray diffraction. A pressure-induced structural phase transition is found for the EtOH- and DMF-included frameworks during compression in a hydrostatic medium of the guest species, which is dependent upon the nature and quantity of the guest in the channels. The EtOH-included material undergoes a phase transition from P4/mmm to C2/m at 0.69 GPa, which is accompanied by a change in the pore shape from square to rhombus via super-filling of the pores. The DMF-included material undergoes a guest-mediated phase transition from I4/

SUBMITTER: Turner GF 

PROVIDER: S-EPMC8549792 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature