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Gas-responsive porous magnet distinguishes the electron spin of molecular oxygen
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Description
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.
Journal
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- Nature Communications
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Nature Communications 9 5420-, 2018-12-21
Springer Nature
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Details 詳細情報について
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- CRID
- 1050001338209183488
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- NII Article ID
- 120006549327
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- ISSN
- 20411723
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- HANDLE
- 2433/236044
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- PubMed
- 30575750
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE