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Facile synthesis and polymerization of 2,6-difluoro-2’-sulfobenzophenone for aromatic proton conducting ionomers with pendant sulfobenzoyl groups

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Author

Summary, in English

The lithium salt of 2,6-difluoro-2′-sulfobenzophenone was conveniently synthesized in one-pot by reacting 2,6-difluorophenyllithium with 2-sulfobenzoic acid cyclic anhydride in THF at −70 °C whereafter the product crystallized out of solution. A poly(arylene ether) and a poly(arylene sulfide) were prepared by polycondensation reactions to demonstrate the reactivity and efficacy of this new monomer to produce sulfonated high-molecular weight aromatic polymers for fuel cell proton-exchange membranes. This work demonstrated that organolithium chemistry may offer versatile and straightforward pathways to new functional monomers with fluorine atoms activated for nucleophilic aromatic substitution reactions.

Publishing year

2010

Language

English

Pages

1348-1353

Publication/Series

Macromolecular Rapid Communications

Volume

31

Issue

15

Document type

Journal article

Publisher

John Wiley & Sons Inc.

Topic

  • Chemical Sciences

Keywords

  • polymer electrolyte fuel cell membranes
  • sulfonated monomers
  • ionomers
  • polyaromatics
  • polyelectrolytes

Status

Published

ISBN/ISSN/Other

  • ISSN: 1022-1336