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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.
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页码:23346 / 23352
页数:7
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