Chinese Journal of Chemistry

Synthesis and characterization of sulfonated polyimides containing trifluoromethyl groups as proton exchange membranes

Q Zhang, Q Li

Index: Zhang, Qingshuang; Li, Qiaoling Chinese Journal of Chemistry, 2011 , vol. 29, # 7 p. 1460 - 1466

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Citation Number: 2

Abstract

Abstract 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