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Sökning: WFRF:(Reiter Manuel)

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1.
  • Reiter, Manuel, et al. (författare)
  • Siloxane-Based Main-Chain Poly(ionic liquid)s via a Debus-Radziszewski Reaction
  • 2022
  • Ingår i: ACS Polymers Au. - : American Chemical Society (ACS). - 2694-2453. ; 2:2, s. 80-87
  • Tidskriftsartikel (refereegranskat)abstract
    • Herein, we synthesized a series of siloxane-based poly(ionic liquid)s (PILs) with imidazolium-type species in the main chain via the multicomponent Debus–Radziszewski reaction. We employed oligodimethylsiloxane diamine precursors to integrate flexible spacers in the polymer backbone and ultimately succeeded in obtaining main-chain PILs with low glass transition temperatures (Tgs) in the range of −40 to −18 °C. Such PILs were combined with conventional hydrophobic vinylimidazolium-based PILs for the fabrication of porous membranes via interpolyelectrolyte complexation with poly(acrylic acid), which leads to enhanced mechanical performance in the tensile testing measurements. This study will enrich the structure library of main-chain PILs and open up more opportunities for potential industrial applications of porous imidazolium-based membranes.
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2.
  • Reiter, Manuel, et al. (författare)
  • Tuning the glass transition of siloxane-based poly(ionic liquid)s towards high ion conductivity
  • 2021
  • Ingår i: Journal of Polymer Science. - : Wiley. - 2642-4150 .- 2642-4169. ; 59:14, s. 1518-1527
  • Tidskriftsartikel (refereegranskat)abstract
    • Herein, we report a simple and versatile synthetic approach towards siloxane-based poly(ionic liquid)s (PILs) with unusually low glass transition temperatures (Tg) down to −73°C, and thus “liquid-like” behavior at room temperature. We designed a polydimethylsiloxane-derived copolymer carrying dialkylimidazolium moieties, and by careful selection of the side-chain length and the type of anions we were able to manipulate its Tg over a wide range and reach high ionic conductivities (σDC) up to 4.8 × 10−5 S/cm at 300 K. The ionized species make up only a minor fraction (<25 mol%) of the overall repeating units and are supposedly randomly distributed: Yet our results indicate dramatic effects on the thermal properties due to repulsive interactions between ionic and non-ionic segments.
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