Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 60, Issue SB, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.35848/1347-4065/abe0a0
Keywords
Metal-organic frameworks; Ionic Liquid; Nanoionic device
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Funding
- JSPS KAKENHI [JP20J12046]
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Metal-organic frameworks have attracted attention as functional materials due to their structural flexibility in designing materials with uniform nanopores. By studying the electrical properties of Cu-3(btc)(2), it was found that the absorbed solvent strongly influenced its properties. The highly insulating nanopores of Cu-3(btc)(2) allow liquids to be absorbed and used as solids.
Metal-organic frameworks, which are three-dimensional nanoporous materials composed of metal ions and organic ligands, have recently attracted significant attention as functional materials owing to their structural flexibility in the material design of uniform-size nanopores. In this study, basic investigations of the electrical properties of Cu-3(btc)(2) (btc; 1,3,5-benzenetricarboxylic acid) were carried out using single crystalline samples. We determined that the pore-filling solvent absorbed by capillary condensation strongly dominated the electrical properties of Cu-3(btc)(2) single crystals. The extremely dense and highly insulating nanopores of Cu-3(btc)(2) enabled us to use liquids as solids by absorbing the liquids into the nanopores. By loading an ionic liquid, which is composed of tunable ionic compound (salt) with superior characteristics for electrolyte use, this substance can be used as a solid electrolyte for application to solid-state nanoionic devices without compromising its original ion transport property.
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