Versatile synthesis of sulfonated aromatic copolymers using NiBr2

Ibuki Hosaka, Masato Kusakabe, Kenji Miyatake

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In this research, copolymerization reaction of sulfonated dichlorobenzene and dichloro-Terminated aromatic oligomer was investigated for the preparation of sulfonated copolymers as proton conductive membranes. We found that a versatile synthetic method without using costly Ni(0) catalyst, where NiBr2 could be reduced to Ni(0) with Zn in situ during the copolymerization reaction, was applicable. The resulting copolymer had comparable molecular weight and proton conductivity to those of the copolymers prepared by the previous method using Ni(0).

Original languageEnglish
Pages (from-to)257-259
Number of pages3
JournalChemistry Letters
Issue number2
Publication statusPublished - 2018
Externally publishedYes


  • Copolymerization reaction
  • Ionomers
  • Proton conduction

ASJC Scopus subject areas

  • General Chemistry


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