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

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.

• Författare: Elin Persson Jutemar; Shogo Takamuku; Patric Jannasch
• Avdelning/ar: Centrum för analys och syntes
• Publiceringsår: 2010
• Språk: Engelska
• Sidor: 1348-1353
• Publikation/Tidskrift/Serie: Macromolecular Rapid Communications
• Volym: 31
• Issue: 15
• Länkar: http://dx.doi.org/10.1002/marc.201000081
• Dokumenttyp: Artikel i tidskrift
• Förlag: John Wiley & Sons Inc.
• Ämne: Chemical Sciences
• Nyckelord: polymer electrolyte fuel cell membranes; sulfonated monomers; ionomers; polyaromatics; polyelectrolytes
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 1022-1336