AbstractPoly(ether ketone sulfone)s with functionalized benzotriazole side chains are simply designed and successfully obtained by the copolycondensation of 4,4-difluorodiphenylsulfone, 4,4’-dihydroxydiphenylamine and a benzotriazole-based difluoro compound. The resulting polymers are identified by Fourier transform infrared spectroscopy and nuclear magnetic resonance, and the results are consistent with the proposed polymer structures. Owing to the intermolecular hydrogen bonding, the phosphoric acid (PA)-doped polymer membranes show encouraging mechanical properties. Taking advantage of the flexible movement of the benzotriazole in the side chains, the resulting membranes exhibit promising proton conductivities and fuel cell performance, which makes them a strong potential material for applications in high-temperature proton exchange membrane fuel cells.Taking advantage of the flexible movement for the benzotriazole in the side chains, the resulting membranes exhibit encouraging proton conductivities and fuel cell performance.

中文翻译：

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用于高温质子交换膜的具有柔性苯并三唑侧链的新型磷酸 (PA)-聚（醚酮砜）

摘要 通过4,4-二氟二苯砜、4,4'-二羟基二苯胺与苯并三唑类二氟化合物的共缩聚，设计简单并成功地获得了具有官能化苯并三唑侧链的聚醚酮砜。所得聚合物通过傅里叶变换红外光谱和核磁共振进行鉴定，结果与所提出的聚合物结构一致。由于分子间氢键，磷酸（PA）掺杂的聚合物膜显示出令人鼓舞的机械性能。利用苯并三唑在侧链中的灵活运动，所得膜表现出良好的质子传导性和燃料电池性能，