Structural Investigation of Chloride Ion-Containing Acrylate-Based Imidazolium Poly(Ionic Liquid) Homopolymers and Crosslinked Networks: Effect of Alkyl Spacer and N-Alkyl Substituents
Understanding the interplay between the molecular structure of the ionic liquid (IL) subunit, the resulting nanostructure and ion transport in polymerized ionic liquids (PILs) is necessary for the realization of high-performance solid-state electrolytes required in various advanced applications. Her...
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2024-12-01
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| author | Mahmoud Al-Hussein Lisa Ehrlich Doris Pospiech Petra Uhlmann |
| author_facet | Mahmoud Al-Hussein Lisa Ehrlich Doris Pospiech Petra Uhlmann |
| author_sort | Mahmoud Al-Hussein |
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| description | Understanding the interplay between the molecular structure of the ionic liquid (IL) subunit, the resulting nanostructure and ion transport in polymerized ionic liquids (PILs) is necessary for the realization of high-performance solid-state electrolytes required in various advanced applications. Herein, we present a detailed structural characterization of a recently synthesized series of acrylate-based PIL homopolymers and networks with imidazolium cations and chloride anions with varying alkyl spacer and terminal group lengths designed for organic solid-state batteries based on X-ray scattering. The impact of the concentrations of both the crosslinker and added tetrabutylammonium chloride (TBACl) conducting salt on the structural characteristics is also investigated. The results reveal that the length of both the spacer and terminal group influence the chain packing and, in turn, the nanophase segregation of the polar domains. Long spacers and terminal groups seem to induce denser polar aggregates sandwiched between more compact alkyl spacer and terminal group domains. However, the large inter-backbone spacing achieved seems to limit the ionic conductivity of these PILs. More importantly, our findings show that the previously reported general relationships between the ionic conductivity and the structural parameters of the nanostructure of PILs are not always attainable for different molecular structures of the IL side group. |
| format | Article |
| id | doaj-art-ad8477ecdc3b4747b4ab34590a3e7abd |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj-art-ad8477ecdc3b4747b4ab34590a3e7abd2025-01-10T13:19:20ZengMDPI AGNanomaterials2079-49912024-12-011514010.3390/nano15010040Structural Investigation of Chloride Ion-Containing Acrylate-Based Imidazolium Poly(Ionic Liquid) Homopolymers and Crosslinked Networks: Effect of Alkyl Spacer and N-Alkyl SubstituentsMahmoud Al-Hussein0Lisa Ehrlich1Doris Pospiech2Petra Uhlmann3Physics Department, The University of Jordan, Amman 11942, JordanLeibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, GermanyLeibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069 Dresden, GermanyUnderstanding the interplay between the molecular structure of the ionic liquid (IL) subunit, the resulting nanostructure and ion transport in polymerized ionic liquids (PILs) is necessary for the realization of high-performance solid-state electrolytes required in various advanced applications. Herein, we present a detailed structural characterization of a recently synthesized series of acrylate-based PIL homopolymers and networks with imidazolium cations and chloride anions with varying alkyl spacer and terminal group lengths designed for organic solid-state batteries based on X-ray scattering. The impact of the concentrations of both the crosslinker and added tetrabutylammonium chloride (TBACl) conducting salt on the structural characteristics is also investigated. The results reveal that the length of both the spacer and terminal group influence the chain packing and, in turn, the nanophase segregation of the polar domains. Long spacers and terminal groups seem to induce denser polar aggregates sandwiched between more compact alkyl spacer and terminal group domains. However, the large inter-backbone spacing achieved seems to limit the ionic conductivity of these PILs. More importantly, our findings show that the previously reported general relationships between the ionic conductivity and the structural parameters of the nanostructure of PILs are not always attainable for different molecular structures of the IL side group.https://www.mdpi.com/2079-4991/15/1/40polymerized ionic liquidscrosslinkingconductive saltchain packinginternal structurewide-angle X-ray scattering |
| spellingShingle | Mahmoud Al-Hussein Lisa Ehrlich Doris Pospiech Petra Uhlmann Structural Investigation of Chloride Ion-Containing Acrylate-Based Imidazolium Poly(Ionic Liquid) Homopolymers and Crosslinked Networks: Effect of Alkyl Spacer and N-Alkyl Substituents Nanomaterials polymerized ionic liquids crosslinking conductive salt chain packing internal structure wide-angle X-ray scattering |
| title | Structural Investigation of Chloride Ion-Containing Acrylate-Based Imidazolium Poly(Ionic Liquid) Homopolymers and Crosslinked Networks: Effect of Alkyl Spacer and N-Alkyl Substituents |
| title_full | Structural Investigation of Chloride Ion-Containing Acrylate-Based Imidazolium Poly(Ionic Liquid) Homopolymers and Crosslinked Networks: Effect of Alkyl Spacer and N-Alkyl Substituents |
| title_fullStr | Structural Investigation of Chloride Ion-Containing Acrylate-Based Imidazolium Poly(Ionic Liquid) Homopolymers and Crosslinked Networks: Effect of Alkyl Spacer and N-Alkyl Substituents |
| title_full_unstemmed | Structural Investigation of Chloride Ion-Containing Acrylate-Based Imidazolium Poly(Ionic Liquid) Homopolymers and Crosslinked Networks: Effect of Alkyl Spacer and N-Alkyl Substituents |
| title_short | Structural Investigation of Chloride Ion-Containing Acrylate-Based Imidazolium Poly(Ionic Liquid) Homopolymers and Crosslinked Networks: Effect of Alkyl Spacer and N-Alkyl Substituents |
| title_sort | structural investigation of chloride ion containing acrylate based imidazolium poly ionic liquid homopolymers and crosslinked networks effect of alkyl spacer and n alkyl substituents |
| topic | polymerized ionic liquids crosslinking conductive salt chain packing internal structure wide-angle X-ray scattering |
| url | https://www.mdpi.com/2079-4991/15/1/40 |
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