{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T11:40:26Z","timestamp":1777894826246,"version":"3.51.4"},"reference-count":74,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T00:00:00Z","timestamp":1771977600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006769","name":"Russian Science Foundation","doi-asserted-by":"publisher","award":["22-79-10302-P"],"award-info":[{"award-number":["22-79-10302-P"]}],"id":[{"id":"10.13039\/501100006769","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012190","name":"Ministry of Science and Higher Education of the Russian Federation","doi-asserted-by":"crossref","award":["FSSM-2024-0006"],"award-info":[{"award-number":["FSSM-2024-0006"]}],"id":[{"id":"10.13039\/501100012190","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>This study reports the synthesis and catalytic evaluation of a series of imidazolium-based polymeric ionic liquids (PILs) for the cycloaddition of CO2 to epichlorohydrin (ECH). The synthesized catalysts include homopolymers, poly(3-hydroxyethyl-1-vinylimidazole chloride) (p[HVIm][Cl]) and poly(3-carboxymethyl-1-vinylimidazole chloride) (p[CMVIm][Cl]), and their block copolymers with polystyrene, synthesized for the first time, pS-b-p[HVIm][Cl] and pS-b-p[CMVIm][Cl]. Structural characterization by NMR, IR spectroscopy, and gel permeation chromatography confirmed the successful synthesis. The block copolymers exhibited a low polydispersity index (PDI 1.1\u20131.2), which is indicative of homogeneous chain lengths and the propensity to form ordered nanostructures, whereas the homopolymers showed higher PDI (2.4\u20132.9). Catalytic testing at 90 \u00b0C and 1 MPa CO2 for 4 h revealed a clear activity trend: p[CMVIm][Cl] &lt; p[HVIm][Cl] &lt; pS-b-p[CMVIm][Cl] &lt; pS-b-p[HVIm][Cl], with conversions exceeding 75% for all catalysts and a maximum of 82.69% for pS-b-p[HVIm][Cl]. These results demonstrate that the catalytic performance of PILs is governed by a synergistic interplay between the local chemical functionality of the ionic moiety and the overall polymer architecture. Based on these results, the synthesized polymeric ionic liquids, particularly pS-b-p[HVIm][Cl], demonstrate strong potential for creating multifunctional materials. Their ability to self-assemble into ordered nanostructures with distinct hydrophobic and hydrophilic domains provides a foundational architecture for combined gas separation and catalysis. The observed \u201cmicellar catalytic effect\u201d, which enhances local reagent concentration near active sites, could be leveraged in a membrane reactor to simultaneously capture and convert CO2 directly within the membrane. This integrated \u201cseparation\u2013reaction\u201d approach represents a promising strategy for advancing circular carbon economy technologies.<\/jats:p>","DOI":"10.3390\/polym18050549","type":"journal-article","created":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T10:59:16Z","timestamp":1772017156000},"page":"549","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Functional Poly(Ionic Liquid)s: Catalytic Conversion of CO2"],"prefix":"10.3390","volume":"18","author":[{"given":"Maria","family":"Atlaskina","sequence":"first","affiliation":[{"name":"Laboratory of SMART Polymeric Materials and Technologies, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kirill","family":"Smorodin","sequence":"additional","affiliation":[{"name":"Laboratory of SMART Polymeric Materials and Technologies, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sergey","family":"Kryuchkov","sequence":"additional","affiliation":[{"name":"Laboratory of SMART Polymeric Materials and Technologies, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Artem","family":"Atlaskin","sequence":"additional","affiliation":[{"name":"Laboratory of SMART Polymeric Materials and Technologies, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-7923-1795","authenticated-orcid":false,"given":"Alexander","family":"Sysoev","sequence":"additional","affiliation":[{"name":"Laboratory of SMART Polymeric Materials and Technologies, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4841-2739","authenticated-orcid":false,"given":"Olga","family":"Kazarina","sequence":"additional","affiliation":[{"name":"Chemical Engineering Laboratory, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4904-7622","authenticated-orcid":false,"given":"Anton","family":"Petukhov","sequence":"additional","affiliation":[{"name":"Chemical Engineering Laboratory, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5447-5296","authenticated-orcid":false,"given":"Andrey","family":"Vorotyntsev","sequence":"additional","affiliation":[{"name":"Chemical Engineering Laboratory, Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ilya","family":"Vorotyntsev","sequence":"additional","affiliation":[{"name":"Laboratory of SMART Polymeric Materials and Technologies, Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"426","DOI":"10.1016\/j.rser.2014.07.093","article-title":"An Overview of Current Status of Carbon Dioxide Capture and Storage Technologies","volume":"39","author":"Leung","year":"2014","journal-title":"Renew. 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