A Microporous Poly(Arylene Ether) Platform for Membrane‐Based Gas Separation
Name
2025_JYY_PAE_Manuscript_Review.pdf
Description
Accepted version
Size
2.59 MB
Format
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Checksum (MD5)
b572a41d3575192fe2a0ada766b699d9
Author(s)
Guo, Sheng
Yeo, Jing Ying
Benedetti, Francesco M
Syar, Duha
Swager, Timothy M
Smith, Zachary P
Date Issued
February 19, 2024
Journal
Angewandte Chemie
Publisher
Wiley
Abstract
Membrane-based gas separations are crucial for an energy-efficient future. However, it is difficult to develop membrane materials that are high-performing, scalable, and processable. Microporous organic polymers (MOPs) combine benefits for gas sieving and solution processability. Herein, we report membrane performance for a new family of microporous poly(arylene ether)s (PAEs) synthesized via Pd-catalyzed C−O coupling reactions. The scaffold of these microporous polymers consists of rigid three-dimensional triptycene and stereocontorted spirobifluorene, endowing these polymers with micropore dimensions attractive for gas separations. This robust PAE synthesis method allows for the facile incorporation of functionalities and branched linkers for control of permeation and mechanical properties. A solution-processable branched polymer was formed into a submicron film and characterized for permeance and selectivity, revealing lab data that rivals property sets of commercially available membranes already optimized for much thinner configurations. Moreover, the branching motif endows these materials with outstanding plasticization resistance, and their microporous structure and stability enables benefits from competitive sorption, increasing CO2/CH4 and (H2S+CO2)/CH4 selectivity in mixture tests as predicted by the dual-mode sorption model. The structural tunability, stability, and ease-of-processing suggest that this new platform of microporous polymers provides generalizable design strategies to form MOPs at scale for demanding gas separations in industry.
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DOI of Published Version
https://doi.org/10.1002/ange.202315611
