Guest-Controlled Incommensurate Modulation in a Meta-Rigid Metal-Organic Framework Material



Li, Jiangnan, Zhou, Zhengyang, Han, Xue, Zhang, Xinran, Yan, Yong, Li, Weiyao, Smith, Gemma L, Cheng, Yongqiang, McPherson, Laura J McCormick, Teat, Simon J
et al (show 7 more authors) (2020) Guest-Controlled Incommensurate Modulation in a Meta-Rigid Metal-Organic Framework Material. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 142 (45). pp. 19189-19197.

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Abstract

Structural transitions of host systems in response to guest binding dominate many chemical processes. We report an unprecedented type of structural flexibility within a meta-rigid material, MFM-520, which exhibits a reversible periodic-to-aperiodic structural transition resulting from a drastic distortion of a [ZnO<sub>4</sub>N] node controlled by the specific host-guest interactions. The aperiodic crystal structure of MFM-520 has no three-dimensional (3D) lattice periodicity but shows translational symmetry in higher-dimensional (3 + 2)D space. We have directly visualized the aperiodic state which is induced by incommensurate modulation of the periodic framework of MFM-520·H<sub>2</sub>O upon dehydration to give MFM-520. Filling MFM-520 with CO<sub>2</sub> and SO<sub>2</sub> reveals that, while CO<sub>2</sub> has a minimal structural influence, SO<sub>2</sub> can further modulate the structure incommensurately. MFM-520 shows exceptional selectivity for SO<sub>2</sub> under flue-gas desulfurization conditions, and the facile release of captured SO<sub>2</sub> from MFM-520 enabled the conversion to valuable sulfonamide products. MFM-520 can thus be used as a highly efficient capture and delivery system for SO<sub>2</sub>.

Item Type: Article
Uncontrolled Keywords: 3402 Inorganic Chemistry, 3403 Macromolecular and Materials Chemistry, 34 Chemical Sciences
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 07 Sep 2021 15:57
Last Modified: 22 Jun 2024 14:01
DOI: 10.1021/jacs.0c08794
Open Access URL: https://pubs.acs.org/doi/10.1021/jacs.0c08794
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3136259