Issue 35, 2023

Tuning the guest-induced spatiotemporal response of isostructural dynamic frameworks towards efficient gas separation and storage

Abstract

Understanding and control of the spatiotemporal stimuli-responsiveness of flexible metal–organic frameworks are crucial for the development of novel adsorbents for gas storage and separation technologies. Herein, we report two isostructural pillared-layer dynamic frameworks differing only in one atom that bridge a benzenocarboxylate linker. Through a synthetic approach, we switch the stepwise CO2-induced transformation into a continuous one. Our findings are proved by equilibrium and time-resolved in situ powder X-ray diffraction collected during CO2 adsorption at 195 K. Finally, we use high-pressure single and multi-gas adsorption experiments to show the superiority of continuous breathing in CH4 storage and CH4/CO2 separation at 298 K. This report demonstrates that the desirable mechanism of flexible frameworks can be readily achieved through single-atom exchange enabling efficient gas separation and storage.

Graphical abstract: Tuning the guest-induced spatiotemporal response of isostructural dynamic frameworks towards efficient gas separation and storage

Supplementary files

Article information

Article type
Communication
Submitted
11 apr 2023
Accepted
22 jul 2023
First published
23 aug 2023
This article is Open Access
Creative Commons BY license

J. Mater. Chem. A, 2023,11, 18646-18650

Tuning the guest-induced spatiotemporal response of isostructural dynamic frameworks towards efficient gas separation and storage

K. Roztocki, S. Sobczak, A. Smaruj, A. Walczak, M. Gołdyn, V. Bon, S. Kaskel and A. R. Stefankiewicz, J. Mater. Chem. A, 2023, 11, 18646 DOI: 10.1039/D3TA02167J

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