Proton conducting polysulfone ionomers carrying sulfoaryloxybenzoyl side chains
Författare
Summary, in English
Novel proton conducting ionomers have been prepared by attaching pendant sulfonated aromatic side chains to polysulfone. Lithiated polysulfone was first reacted with 4-fluorobenzoic acid chloride to introduce 4-fluorobenzoyl side chains to the polymer main chain. Next, the activated fluoro groups were replaced by 4-sulfophenoxy or 7-sulfo-2-naphthoxy in a potassium carbonate-mediated nucleophilic substitution reaction. This reaction proceeded under full conversion and the degree of substitution was easily controlled by the degree of lithiation in the first step. Membranes based on ionomers carrying one sulfophenoxybenzoyl unit per polymer repeat unit reached a proton conductivity exceeding 30 mS center dot cm(-1) at 120 degrees C under immersed conditions.
Avdelning/ar
Publiceringsår
2005
Språk
Engelska
Sidor
1464-1468
Publikation/Tidskrift/Serie
Macromolecular Rapid Communications
Volym
26
Issue
18
Dokumenttyp
Artikel i tidskrift
Förlag
John Wiley & Sons Inc.
Ämne
- Chemical Sciences
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1022-1336