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タイトル: Gas-responsive porous magnet distinguishes the electron spin of molecular oxygen
著者: Kosaka, Wataru
Liu, Zhaoyuan
Zhang, Jun
Sato, Yohei
Hori, Akihiro
Matsuda, Ryotaro
Kitagawa, Susumu
Miyasaka, Hitoshi
著者名の別形: 高坂, 亘
佐藤, 洋平
堀, 彰宏
松田, 亮太郎
北川, 進
宮坂, 等
キーワード: Magnetic materials
Metal-organic frameworks
Solid-state chemistry
発行日: 21-Dec-2018
出版者: Springer Nature
誌名: Nature Communications
巻: 9
論文番号: 5420
抄録: Gas-sensing materials are becoming increasingly important in our society, requiring high sensitivity to differentiate similar gases like N2 and O2. For the design of such materials, the driving force of electronic host-guest interaction or host-framework changes during the sorption process has commonly been considered necessary; however, this work demonstrates the use of the magnetic characteristics intrinsic to the guest molecules for distinguishing between diamagnetic N2 and CO2 gases from paramagnetic O2 gas. While the uptake of N2 and CO2 leads to an increase in TC through ferrimagnetic behavior, the uptake of O2 results in an O2 pressure-dependent continuous phase change from a ferrimagnet to an antiferromagnet, eventually leading to a novel ferrimagnet with aligned O2 spins following application of a magnetic field. This chameleonic material, the first with switchable magnetism that can discriminate between similarly sized N2 and O2 gases, provides wide scope for new gas-responsive porous magnets.
記述: 酸素ガスの吸脱着により磁石のON-OFF制御に初成功 --酸素分子の電子スピンを見分ける多孔性磁石--. 京都大学プレスリリース. 2019-01-07.
著作権等: © The Author(s) 2018. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
URI: http://hdl.handle.net/2433/236044
DOI(出版社版): 10.1038/s41467-018-07889-1
PubMed ID: 30575750
関連リンク: http://www.kyoto-u.ac.jp/ja/research/research_results/2018/181221_1.html
出現コレクション:学術雑誌掲載論文等

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