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Swelling Poly(ionic liquid)s Tailored With Flexible Segment for Quasi‐homogeneously Catalytic CO2 Conversion Into Cyclic Carbonates.

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Title: Swelling Poly(ionic liquid)s Tailored With Flexible Segment for Quasi‐homogeneously Catalytic CO2 Conversion Into Cyclic Carbonates.
Authors: Liu, Wen1,2 (AUTHOR), Xue, Chen1 (AUTHOR), Yang, Zifeng1 (AUTHOR), Luo, LiJuan1 (AUTHOR), Su, Qian1,3 (AUTHOR) qsu@ipe.ac.cn, Cheng, Weiguo1,4 (AUTHOR) wgcheng@ipe.ac.cn
Source: ChemCatChem. 1/15/2026, Vol. 18 Issue 1, p1-12. 12p.
Subjects: Polymerized ionic liquids, Carbon dioxide, Heterogeneous catalysts, Catalytic activity, Polymers, Cyclic ethers
Abstract: Poly (ionic liquid)s (PILs) are promising catalysts for conversion of CO2 and epoxides into cyclic carbonates, which could mitigate greenhouse effects while generating economic benefits. To achieve efficient utilization of active sites of PILs, a series of swelling PILs were synthesized in this work by copolymerization of ionic liquid monomer (EIL) with flexible polyethylene glycol dimethacrylate (PEGDMA) at varying molar ratio. The resulting swelling PILs showed significantly improved catalytic activity compared to nonswollen PEIL obtained by EIL self‐polymerization. Additionally, a lower EIL/PEGDMA ratio during synthesis increased the flexible segment length between ionic liquid sites, which enhanced the swelling ability of PILs and further improved the catalytic activity. Among the synthesized PILs, the optimized P(EIL‐co‐EG)1.0, which showed the strong swelling ability, achieved catalytic performance comparable to that of monomers homogeneous catalysis, yielding 93.4% PC under the reaction conditions optimized (120°C, 1.5 mol% catalyst, 2 MPa CO2, 3 h). Furthermore, P(EIL‐co‐EG)1.0 demonstrated broad substrate scope toward various epoxides. Finally, based on FT‐IR and NMR spectroscopy, a plausible catalytic mechanism was proposed. This study offers valuable insights into the enhancement of heterogeneous catalyst efficiency and the rational design of quasihomogeneous catalytic systems. [ABSTRACT FROM AUTHOR]
Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Swelling Poly(ionic liquid)s Tailored With Flexible Segment for Quasi‐homogeneously Catalytic CO<subscript>2</subscript> Conversion Into Cyclic Carbonates.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Wen%22">Liu, Wen</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xue%2C+Chen%22">Xue, Chen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Zifeng%22">Yang, Zifeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+LiJuan%22">Luo, LiJuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Su%2C+Qian%22">Su, Qian</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> qsu@ipe.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Cheng%2C+Weiguo%22">Cheng, Weiguo</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> wgcheng@ipe.ac.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22ChemCatChem%22">ChemCatChem</searchLink>. 1/15/2026, Vol. 18 Issue 1, p1-12. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Polymerized+ionic+liquids%22">Polymerized ionic liquids</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Heterogeneous+catalysts%22">Heterogeneous catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Catalytic+activity%22">Catalytic activity</searchLink><br /><searchLink fieldCode="DE" term="%22Polymers%22">Polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Cyclic+ethers%22">Cyclic ethers</searchLink>
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  Data: Poly (ionic liquid)s (PILs) are promising catalysts for conversion of CO2 and epoxides into cyclic carbonates, which could mitigate greenhouse effects while generating economic benefits. To achieve efficient utilization of active sites of PILs, a series of swelling PILs were synthesized in this work by copolymerization of ionic liquid monomer (EIL) with flexible polyethylene glycol dimethacrylate (PEGDMA) at varying molar ratio. The resulting swelling PILs showed significantly improved catalytic activity compared to nonswollen PEIL obtained by EIL self‐polymerization. Additionally, a lower EIL/PEGDMA ratio during synthesis increased the flexible segment length between ionic liquid sites, which enhanced the swelling ability of PILs and further improved the catalytic activity. Among the synthesized PILs, the optimized P(EIL‐co‐EG)1.0, which showed the strong swelling ability, achieved catalytic performance comparable to that of monomers homogeneous catalysis, yielding 93.4% PC under the reaction conditions optimized (120°C, 1.5 mol% catalyst, 2 MPa CO2, 3 h). Furthermore, P(EIL‐co‐EG)1.0 demonstrated broad substrate scope toward various epoxides. Finally, based on FT‐IR and NMR spectroscopy, a plausible catalytic mechanism was proposed. This study offers valuable insights into the enhancement of heterogeneous catalyst efficiency and the rational design of quasihomogeneous catalytic systems. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/cctc.202501668
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        Text: English
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      – SubjectFull: Polymerized ionic liquids
        Type: general
      – SubjectFull: Carbon dioxide
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      – SubjectFull: Heterogeneous catalysts
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      – SubjectFull: Polymers
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      – SubjectFull: Cyclic ethers
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      – TitleFull: Swelling Poly(ionic liquid)s Tailored With Flexible Segment for Quasi‐homogeneously Catalytic CO2 Conversion Into Cyclic Carbonates.
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              Text: 1/15/2026
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              Y: 2026
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