Ionics of polymerized ionic liquids

聚合离子液体的离子学

基本信息

批准号：
14205136
负责人：
OHNO Hiroyuki
金额：
$ 34.44万
依托单位：
National University Corporation Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14205136/
关键词：
Ionic liquids Polymerization Ionic conductivity Anion trap イオン性液体

项目摘要

The purpose of this study is synthesis of polymers composed of room temperature ionic liquid structure and their application as ion conductive materials in solid film. In this year, we have examined polymerization of novel ionic liquids taking advantage of our knowledge on various low molecular weight imidazolium salts prepared as model compounds. A variety of imidazolium salts bearing vinyl group were prepared. They were then homopolymerized or copolymerized with other monomers. The mobility of ions was improved by introducing spacer between polymer main chain and imidazolium unit, or incorporating a unit which reduces Tg of systems. Furthermore, in view of application as electronic devices, we have also prepared some systems which are capable of transporting target ion selectively. By adding LiTFSI and zwitterionic liquid which does not migrate under potential gradient, we have designed a polymer matrix in which only lithium cation is mobile. The dissociation degree of salt in polymer matrix was analyzed by laser Raman spectroscopy. It has not been clarified so far why ionic conductivity is not improved for some systems in spite of higher segmental mobility of matrix. This method enabled to investigate the dissociation degree of salt to demonstrate that a considerable amount of undissociated salts was found to affect negatively in the system.We have also prepared boron containing polymers in which selective cation transport was possible via anion trapping effect of electron deficient organoboron unit. For all the boron containing systems prepared, lithium transference number exceeded 0.6.Dissolution of biomolecules in ionic liquids was also successful. After poly(ethylene oxide) modification, cytochrome c was dissolved in ionic liquid. We have studied their thermal stability by optical waveguide spectroscopy. It was demonstrated that oxidation and reduction of PEO modified Cytochrome c was stably carried out up to 140℃.

这项研究的目的是合成由室温离子液体结构组成的聚合物及其在固体膜中的离子导电材料的合成。在今年，我们利用了我们对作为模型化合物制备的各种低分子量咪唑盐盐的了解，研究了新型离子液体的聚合。制备了携带乙烯基的各种咪唑盐。然后将它们与其他单体共聚或共聚。通过在聚合物主链和咪唑单元之间引入间隔物，或增加减少系统TG的单元，从而提高了离子的迁移率。此外，鉴于用作电子设备的应用，我们还准备了一些能够选择性地运输目标离子的系统。通过添加未在潜在梯度下迁移的LITFSI和ZWITTERINIC液体，我们设计了一个聚合物基质，尚未澄清到目前为止，尽管矩阵的分段迁移率较高，但由于某些系统没有提高离子电导率的原因。这种方法能够研究盐的解离程度，以证明在系统中发现了考虑数量的未分离盐的影响。我们还准备了含有聚合物的硼，其中可以通过电子缺陷有机体单位的阴离子捕获效应选择性阳离子传输。对于制备的所有硼含硼，锂转移数超过了离子液体中生物分子的0.6溶解也是成功的。聚（氧化乙烷）修饰后，将细胞色素C溶解在离子液体中。我们已经通过光波导光谱研究了它们的热稳定性。证明PEO修饰的细胞色素C的氧化和还原稳定地进行了140℃。