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Synthesis of highly ion conductive polyether/salt hybrids and their evaluation as an electrochemical reaction matrix

高离子导电性聚醚/盐杂化物的合成及其作为电化学反应基质的评估

基本信息

批准号：
09650986
负责人：
OHNO Hiroyuki
金额：
$ 2.05万
依托单位：
Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650986/
关键词：
Polyether Ion conductive polymers Heme-Proteins 高分子アモルファスイオン伝導体

项目摘要

A series of polyether/salt hybrids was synthesized to develop new type polymeric ion conductor. The ionic conductivity of the obtained hybrids was evaluated and the structure-conductivity relationship was applied to design more conductive polymer matrix. Sulfonimide group was found to be better salt end group, and the ionic conductivity of the hybrid having sulfonamide group was further improved by the addition of low-molecular-weight sulfonimide salt.Molten salt formation was revealed to be effective to improve the ionic conductivity of the hybrids. This was successfully applied to design novel molten salt-type polymeric ion conductors.The electrochemical redox reaction of heme-proteins was analyzed in ion conductive polyethers. They were thermally stable and showed quasi-reversible redox reaction at even 130ﾟC.Surface modification of electrodes with polyethers inhibited the adsorption of heme-proteins and successive denaturation. There was a certain chain length dependence of polyethers for monolayers on the electrode on the electrochemical redox reaction of heme-proteins in polyethers. Thicker monolayer was effective to suppress the denaturation of proteins but is less effective for the electron transfer. Effective electron transfer to proteins was achieved under suitable conditions of some characteristics of polyethers.

为了开发新型聚合物离子导体，合成了一系列聚醚/盐杂化材料。对所得杂化材料的离子导电性进行了评价，并利用结构-电导关系设计了更高导电性的聚合物基质。磺酰亚胺基团是较好的盐端基团，低分子量磺酰亚胺盐的加入进一步提高了杂化产物的离子电导率，熔盐的形成有效地提高了杂化产物的离子电导率。将其成功应用于新型熔盐型聚合物离子导体的设计。分析了血红素蛋白在离子导电聚醚中的电化学氧化还原反应。它们的热稳定性较好，在130ﾟ℃下仍表现为准可逆氧化还原反应。聚醚对电极的表面修饰抑制了血红素蛋白的吸附和后续的变性。聚醚在电极上的单层聚醚对聚醚中血红素蛋白的电化学氧化还原反应有一定的链长依赖性。较厚的单层膜可以有效地抑制蛋白质的变性，但对电子转移的影响较小。根据聚醚的某些特性，在合适的条件下实现了对蛋白质的有效电子转移。