Highly Conductive Ionic-Liquid Gels Prepared with Orthogonal Double Networks of a Low-Molecular-Weight Gelator and Cross-Linked Polymer

被引:43
作者
Kataoka, Toshikazu [1 ]
Ishioka, Yumi [1 ]
Mizuhata, Minoru [1 ]
Minami, Hideto [1 ]
Maruyama, Tatsuo [1 ]
机构
[1] Kobe Univ, Grad Sch Engn, Dept Chem Sci & Engn, Nada Ku, Kobe, Hyogo 6578501, Japan
基金
日本科学技术振兴机构;
关键词
conducting materials; gels; ionic liquids; polymers; molecular self-assembly; SUPRAMOLECULAR GELATORS; MOLTEN-SALTS; ELECTROLYTES; ORGANOGEL; CATALYSIS; MEMBRANES; IONOGELS; SOLVENT;
D O I
10.1021/acsami.5b07981
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We prepared a heterogeneous double-network (DN) ionogel containing a low-molecular-weight gelator network and a polymer network that can exhibit high ionic conductivity and high mechanical strength. An imidazolium-based ionic liquid was first gelated by the molecular self-assembly of a low-molecular-weight gelator (benzenetricarboxamide derivative), and methyl methacrylate was polymerized with a cross-linker to form a cross-linked poly(methyl methacrylate) (PMMA) network within the ionogel. Microscopic observation and calorimetric measurement revealed that the fibrous network of the low-molecular-weight gelator was maintained in the DN ionogel. The PMMA network strengthened the ionogel of the low-molecular-weight gelator and allowed us to handle the ionogel using tweezers. The orthogonal DNs produced ionogels with a broad range of storage elastic moduli. DN ionogels with low PMMA concentrations exhibited high ionic conductivity that was comparable to that of a neat ionic liquid. The present study demonstrates that the ionic conductivities of the DN and single-network, low-molecular-weight gelator or polymer ionogels strongly depended on their storage elastic moduli.
引用
收藏
页码:23346 / 23352
页数:7
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