Polydiimidazopyridine was synthesized from 2,3,5,6-tetraaminopyridine and 2,5-dihydroxyterephthalic acid in polyphosphoric acid (PPA) and characterized. Polydiimidazopyridine possessed high viscosity, high thermooxidative stability, and excellent film-forming properties. The polymer was processed from a reaction solution in PPA to proton-conducting membranes featuring high proton conductivity in the temperature range of 20–200°C, being superior in this value to many known membranes.

中文翻译：

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用于 HT-PEM 燃料电池的新型质子传导聚二咪唑并吡啶基膜

聚二咪唑并吡啶由 2,3,5,6-四氨基吡啶和 2,5-二羟基对苯二甲酸在多磷酸 (PPA) 中合成并表征。聚二咪唑并吡啶具有高粘度、高热氧化稳定性和优异的成膜性能。聚合物从 PPA 中的反应溶液加工成质子传导膜，在 20-200°C 的温度范围内具有高质子传导率，在该值上优于许多已知的膜。