Switchable gate-opening effect in metal–organic polyhedra assemblies through solution processing

Gavin A. Craig, Patrick Larpent, Shinpei Kusaka, Ryotaro Matsuda, Susumu Kitagawa, Shuhei Furukawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

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.
LanguageEnglish
Pages6463-6469
Number of pages7
JournalChemical Science
Volume9
Issue number31
DOIs
Publication statusPublished - 10 Jun 2018

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Metals
Processing
Sorption
Gases
Crystallization
Carbon Dioxide
X ray powder diffraction
Methanol
Solubility
Adsorption
Chemical analysis
Experiments

Keywords

  • organic polyhedra assemblies
  • solution processing
  • metal–organic frameworks
  • gate-opening gas sorption

Cite this

Craig, Gavin A. ; Larpent, Patrick ; Kusaka, Shinpei ; Matsuda, Ryotaro ; Kitagawa, Susumu ; Furukawa, Shuhei. / Switchable gate-opening effect in metal–organic polyhedra assemblies through solution processing. In: Chemical Science. 2018 ; Vol. 9, No. 31. pp. 6463-6469.
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Craig, GA, Larpent, P, Kusaka, S, Matsuda, R, Kitagawa, S & Furukawa, S 2018, 'Switchable gate-opening effect in metal–organic polyhedra assemblies through solution processing' Chemical Science, vol. 9, no. 31, pp. 6463-6469. https://doi.org/10.1039/C8SC02263A

Switchable gate-opening effect in metal–organic polyhedra assemblies through solution processing. / Craig, Gavin A.; Larpent, Patrick; Kusaka, Shinpei; Matsuda, Ryotaro; Kitagawa, Susumu; Furukawa, Shuhei.

In: Chemical Science, Vol. 9, No. 31, 10.06.2018, p. 6463-6469.

Research output: Contribution to journalArticle

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AU - Craig, Gavin A.

AU - Larpent, Patrick

AU - Kusaka, Shinpei

AU - Matsuda, Ryotaro

AU - Kitagawa, Susumu

AU - Furukawa, Shuhei

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AB - 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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