A Stable Hydroxide-Conducting Polymer
A Stable Hydroxide-Conducting Polymer
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DOI：
10.1055/s-0032-1317091
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发表时间：
2012-09
期刊：
影响因子：
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通讯作者：
T. Swager;M. Krikorian
中科院分区：
文献类型：
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作者：
T. Swager;M. Krikorian
意义：作者报道了第一个氢氧化物导电聚合物1。这种新的聚合物可用于氢氧化物传导膜，否则基于在氢氧化物溶液中不稳定的季铵中心。这种合成产生带正电荷的聚合物，也可以耐受碱性条件。评论：在苯并咪唑环的C2位置的空间拥挤有助于稳定聚（苯并咪唑）和苯并咪唑氢氧化物盐2对氢氧化物的攻击。通过添加过量的KOH以形成氢氧化物活化的静电相互作用，将聚合物膜制成不溶性氢氧化物膜。通过洗涤除去K+和OH-产生了不溶性的堆叠聚合物，其用于产生离子电导率高达13.2 mS cm-1的氢氧化物传导膜。
Significance: The authors report the first hydroxide-conducting polymer 1. This new polymer can be used in hydroxide-conducting membranes that are otherwise based on quaternary ammonium centers that are unstable in hydroxide solutions. This synthesis yields a positively charged polymer that can also endure alkaline conditions.Comment: Steric crowding at the C2 position of the benzimidazole rings helps to stabilize the poly (benzimidazole) and benzimidazolium hydroxide salt 2 towards a hydroxide attack. The polymer films were made into an insoluble hydroxide membrane by addition of excess KOH to form hydroxide-activated electrostatic interactions. Removal of K+ and OH–by washing created an insoluble stacked polymer that was used to create hydroxide-conducting membranes that had ionic conductivities of up to 13.2 mS cm–1.