Self-assembly of metal-organic polyhedra into supramolecular polymers with intrinsic microporosity
Carné-Sánchez, Arnau (Institut Català de Nanociència i Nanotecnologia)
Craig, Gavin A. (Kyoto University. Institute for Integrated Cell-Material Sciences)
Larpent, Patrick (Kyoto University. Institute for Integrated Cell-Material Sciences)
Hirose, Takashi (Kyoto University. Department of Synthetic Chemistry and Biological Chemistry)
Higuchi, Masakazu (Kyoto University. Institute for Integrated Cell-Material Sciences)
Kitagawa, Susumu (Kyoto University. Institute for Integrated Cell-Material Sciences)
Matsuda, Kenji (Kyoto University. Department of Synthetic Chemistry and Biological Chemistry)
Urayama, Kenji (Kyoto Institute of Technology. Department of Macromolecular Science and Engineering)
Furukawa, Shuhei (Kyoto University. Department of Synthetic Chemistry and Biological Chemistry)

Data:	2018
Resum:	Designed porosity in coordination materials often relies on highly ordered crystalline networks, which provide stability upon solvent removal. However, the requirement for crystallinity often impedes control of higher degrees of morphological versatility, or materials processing. Herein, we describe a supramolecular approach to the synthesis of amorphous polymer materials with controlled microporosity. The strategy entails the use of robust metal-organic polyhedra (MOPs) as porous monomers in the supramolecular polymerization reaction. Detailed analysis of the reaction mechanism of the MOPs with imidazole-based linkers revealed the polymerization to consist of three separate stages: nucleation, elongation, and cross-linking. By controlling the self-assembly pathways, we successfully tuned the resulting macroscopic form of the polymers, from spherical colloidal particles to colloidal gels with hierarchical porosity. The resulting materials display distinct microporous properties arising from the internal cavity of the MOPs. This synthetic approach could lead to the fabrication of soft, flexible materials with permanent porosity. Porosity in metal-organic materials typically relies on highly ordered crystalline networks, which hinders material processing and morphological control. Here, the authors use metal-organic polyhedra as porous monomers in supramolecular polymerization to produce colloidal spheres and gels with intrinsic microporosity.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Nature communications, Vol. 9 (July 2018) , art. 2506, ISSN 2041-1723

DOI: 10.1038/s41467-018-04834-0
PMID: 30002378

8 p, 1.6 MB

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