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Syntheses of sulfonated star-hyperbranched polyimides and their proton exchange membrane properties

โœ Scribed by Touru Suda; Kouta Yamazaki; Hiroyoshi Kawakami


Book ID
108193067
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
547 KB
Volume
195
Category
Article
ISSN
0378-7753

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A novel sulfonated diamine, 4,4'-bis(4-amino-3-trifluoromethylphenoxy) biphenyl 3,3'-disulfonic acid (F-BAPBDS), was successfully synthesized by nucleophilic aromatic substitution of 4,4'-dihydroxybiphenyl with 2-chloro-5-nitrobenzotrifluoride, followed by reduction and sulfonation. A series of sulf