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Switchable Gate-Opening Effect in Metal-Organic Polyhedra Assemblies Through Solution Processing

Abstract

Gate-opening gas sorption is known for metal-organic frameworks, and is associated with structural flexibility and advantageous properties for sensing and gas uptake. Here, we show that gate-opening is also possible for metal-organic polyhedra (MOPs), and depends on the molecular organisation in the lattice. Thanks to the solubility of MOPs, several interchangeable solvatomorphs of a lantern-type MOP were synthesised via treatment with different solvents. One phase obtained through use of methanol induced a gate-opening effect in the lattice in response to carbon dioxide uptake. The sorption process was thoroughly investigated with in situ powder X-ray diffraction and simultaneous adsorption experiments. Meanwhile, solution processing of this flexible phase using THF led to a permanently porous phase without a gate-opening effect. Furthermore, we find that we can change the metallic composition of the MOP, and yet retain flexibility. By showing that gate-opening can be switched on and off depending on the solvent of crystallisation, these findings have implications for the solution-based processing of MOPs.

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Publication details

The article was received on 23 May 2018, accepted on 09 Jul 2018 and first published on 10 Jul 2018


Article type: Edge Article
DOI: 10.1039/C8SC02263A
Citation: Chem. Sci., 2018, Accepted Manuscript
  • Open access: Creative Commons BY license
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    Switchable Gate-Opening Effect in Metal-Organic Polyhedra Assemblies Through Solution Processing

    G. Craig, P. Larpen, S. Kusaka, R. Matsuda, S. Kitagawa and S. Furukawa, Chem. Sci., 2018, Accepted Manuscript , DOI: 10.1039/C8SC02263A

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