Phenanthroimidazolium-Based Hypercrosslinked Polymers for Catalytic CO₂ Conversion to Cyclic Carbonates.

Authors

Jikai Wen, Yuxuan Luo, Shang Chen, Fuchun Wang

Published in

Chemistry, an Asian journal. Volume 21. Issue 18. Pages e70990.

Abstract

In this work, two phenanthroimidazolium-based ionic hypercrosslinked polymers, PIB-iHCP and PIBB-iHCP, have been successfully synthesized via AlCl₃-catalyzed Friedel-Crafts alkylation and fully characterized. Owing to the rigid structure of the building blocks, the resultant PIB-iHCP and PIBB-iHCP demonstrated relatively high specific surface areas of 612 and 568 m² g^-1, respectively. The presence of imidazolium rings endows hypercrosslinked networks with not only high CO₂ uptake capacity (3.07 mmol g^-1 for PIB-iHCP and 3.37 mmol g^-1 for PIBB-iHCP at 273 K and 1000 mbar), but also high catalytic activity toward the cycloaddition of CO₂ to epoxides. For example, PIBB-iHCP was found to be effective for converting epibromohydrin to the corresponding cyclic carbonate under mild conditions (60°C, 0.1 MPa), with a quantitative conversion (99%) and selectivity (99%). Owing to its high catalytic versatility and recyclability, PIBB-iHCP emerges as a promising heterogeneous catalyst for the cycloaddition of CO₂ to epoxides.

PMID:
42749503
Bibliographic data and abstract were imported from PubMed on 17 Sep 2026.

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