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Preparation and Characterization of Tetra-Imidazolium Hydroxide Polyphenylene Membranes via Nickel Catalyzed C–C Coupling Polymerization

Author

Listed:
  • Hohyoun Jang

    (Department of Applied Chemistry, Konkuk University, Chungju 380-701, Korea)

  • Soonho Lee

    (Department of Applied Chemistry, Konkuk University, Chungju 380-701, Korea)

  • Jaeseong Ha

    (Department of Applied Chemistry, Konkuk University, Chungju 380-701, Korea)

  • Kunyoung Choi

    (Department of Applied Chemistry, Konkuk University, Chungju 380-701, Korea)

  • Taewook Ryu

    (Department of Applied Chemistry, Konkuk University, Chungju 380-701, Korea)

  • Kyunghwan Kim

    (Department of Applied Chemistry, Konkuk University, Chungju 380-701, Korea)

  • Heung-Seok Jeon

    (Department of Computer Engineering, Konkuk University, Chungju 380-701, Korea)

  • Whangi Kim

    (Department of Applied Chemistry, Konkuk University, Chungju 380-701, Korea)

Abstract

Imidazolium hydroxide anion exchange membranes functionalized with conjugated tetraphenylethylene moieties were synthesized via Ni(0) catalyzed polymerization by sequential chloromethylation, substitution with imidazoliums and ion exchange. Moreover, with their pendant benzoyl groups the copolymers showed high molecular weight, durability, thermo-oxidative stability, high solubility in polar aprotic solvents and strong chemical and thermal stability in comparison to alkyl quaternary ammonium-functionalized polymers. The proposed polymer membranes, without ether linkages, demonstrated improved performance in ion exchange capacity, water uptake, ion conductivity, and thermal stability. The polymer membranes were studied by 1 H-NMR (Nuclear Magnetic Resonance) spectroscopy, thermogravimetric analysis, water uptake, ion exchange capacity and ion conductivity. Surface morphologies were assessed by atomic force microscope (AFM). The synthesized polymers may have applications as fuel cell membranes because of their excellent ion conductivity.

Suggested Citation

  • Hohyoun Jang & Soonho Lee & Jaeseong Ha & Kunyoung Choi & Taewook Ryu & Kyunghwan Kim & Heung-Seok Jeon & Whangi Kim, 2016. "Preparation and Characterization of Tetra-Imidazolium Hydroxide Polyphenylene Membranes via Nickel Catalyzed C–C Coupling Polymerization," Energies, MDPI, vol. 9(4), pages 1-10, April.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:4:p:271-:d:67616
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    References listed on IDEAS

    as
    1. Lee, Soonho & Lim, Youngdon & Hossain, Md Awlad & Jang, Hohyoun & Jeon, Youngtae & Lee, Sangyoung & Jin, Lei & Kim, Whangi, 2015. "Synthesis and properties of grafting sulfonated polymer containing isatin by super acid-catalyzed polyhydroxyalkylation reaction for PEMFC," Renewable Energy, Elsevier, vol. 79(C), pages 72-77.
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