Tough and stretchable inorganic/organic double network ion gel containing gemini-type ionic liquid as a multiple hydrogen bond cross-linker

Tough and stretchable inorganic/organic double network ion gels containing gemini-type ionic liquids with two OH groups in the di-cation, which can work as multiple hydrogen bond-based weak cross-linkers of the gel networks, are developed. The extensibility and toughness of inorganic/organic double-network ion gels were dramatically increased using gemini-type ionic liquids as a hydrogen bonding-based weak cross-linker.