title: Anisotropically Swelling Gels Attained through Axis-Dependent Crosslinking of MOF Crystals.
abstract: Anisotropically deforming objects have attracted considerable interest for use in molecular machines and artificial muscles. Herein, we focus on a new approach based on the crystal crosslinking of organic ligands in a pillared-layer metal-organic framework (PLMOF). The approach involves the transformation from crosslinked PLMOF to polymer gels through hydrolysis of the coordination bonds between the organic ligands and metal ions, giving a network polymer that exhibits anisotropic swelling. The anisotropic monomer arrangement in the PLMOF underwent axis-dependent crosslinking to yield anisotropically swelling gels. Therefore, the crystal crosslinking of MOFs should be a useful method for creating actuators with designable deformation properties.
authors.affiliation: Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita10 Nishi8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan.
authors.forename: Takumi
authors.initials: T
authors.lastname: Ishiwata
authors.affiliation: Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita10 Nishi8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan.|Faculty of Science, Hokkaido University, Japan.
authors.forename: Kenta
authors.identifier: 0000-0003-3880-9094
authors.initials: K
authors.lastname: Kokado
authors.affiliation: Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita10 Nishi8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan.|Faculty of Science, Hokkaido University, Japan.
authors.forename: Kazuki
authors.initials: K
authors.lastname: Sada
keywords: click chemistry; crystal engineering; gels; metal-organic frameworks; polymerization