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

Publiceringsår: 2010
Språk: Engelska
Sidor: 1348-1353
Publikation/Tidskrift/Serie: Macromolecular Rapid Communications
Volym: 31
Nummer: 15
Dokumenttyp: Artikel i tidskrift
Förlag: John Wiley & Sons


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.


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


  • ISSN: 1022-1336

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