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dc.contributor.author | Kitada, Atsushi | en |
dc.contributor.author | Ishikawa, Daisuke | en |
dc.contributor.author | Fukami, Kazuhiro | en |
dc.contributor.author | Murase, Kuniaki | en |
dc.contributor.alternative | 北田, 敦 | ja |
dc.contributor.alternative | 石川, 大祐 | ja |
dc.contributor.alternative | 深見, 一弘 | ja |
dc.contributor.alternative | 邑瀬, 邦明 | ja |
dc.date.accessioned | 2019-04-05T05:08:48Z | - |
dc.date.available | 2019-04-05T05:08:48Z | - |
dc.date.issued | 2017-05-06 | - |
dc.identifier.issn | 0013-4651 | - |
dc.identifier.issn | 1945-7111 | - |
dc.identifier.uri | http://hdl.handle.net/2433/240666 | - |
dc.description | This was Paper 1417 presented at the Cancun, Mexico, Meeting of the Society, October 5–9, 2014. This paper is part of the JES Focus Issue on Progress in Molten Salts and Ionic Liquids. | en |
dc.description.abstract | We report an “ionic liquid state” substance composed of superoxide radical anions (O₂⁻) and crownether-coordinated potassium cations. A binary mixture of 18-crown-6-ether (18C6) and potassium superoxide (KO₂) becomes liquid above ca. 38°C. The coordination of 18C6 to K⁺ and the presence of O₂⁻ were confirmed in the liquid state by Raman spectroscopy measurements. Below 38°C, however, the 18C6-KO₂ mixture does not form a complex but undergoes phase separation to parent phases of solid 18C6 and KO₂, because the ion-dipole interaction between K⁺ and 18C6 is overwhelmed by the ion-ion interaction between K⁺ and O₂⁻. In other words, the pair of O₂⁻ and 18C6-coordinated K⁺ only appears above the melting point of pure 18C6, to form an “ionic liquid state”. Among radical-containing ionic liquids, the liquid 18C6-KO₂ mixture has high fluidity and comparable conductivity. The findings show stabilization of superoxide radical anions at liquid state with high concentration, which could be used for many radical reactions. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Electrochemical Society Inc. | en |
dc.rights | © The Author(s) 2017. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. | en |
dc.subject | crownether | en |
dc.subject | ionic liquid | en |
dc.subject | phase separation | en |
dc.subject | radical | en |
dc.subject | superoxide | en |
dc.title | An ionic liquid state composed of superoxide radical anions and crownether-coordinated potassium cations | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Journal of the Electrochemical Society | en |
dc.identifier.volume | 164 | - |
dc.identifier.issue | 8 | - |
dc.identifier.spage | H5119 | - |
dc.identifier.epage | H5123 | - |
dc.relation.doi | 10.1149/2.0131708jes | - |
dc.textversion | publisher | - |
dc.address | Department of Materials Science and Engineering, Kyoto University | en |
dc.address | Department of Materials Science and Engineering, Kyoto University | en |
dc.address | Department of Materials Science and Engineering, Kyoto University | en |
dc.address | Department of Materials Science and Engineering, Kyoto University | en |
dcterms.accessRights | open access | - |
datacite.awardNumber | 25630337 | - |
datacite.awardNumber | 16H02411 | - |
datacite.awardNumber | 15K18253 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
出現コレクション: | 学術雑誌掲載論文等 |
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