Low-temperature liquid-crystalline nitroxide radical

Uchida, Yoshiaki; Akita, Takuya; Ohkochi, Takuo; Ma, Xiao Qian; Kiyohara, Daichi; Nakagami, Sho; Yamazaki, Taira; Nishiyama, Norikazu

doi:https://doi.org/10.1039/D4TC04081C

Low-temperature liquid-crystalline nitroxide radical

Uchida, Yoshiaki; Akita, Takuya; Ohkochi, Takuo et al.

Journal of Materials Chemistry C, 2024, 13(1), 54-60

アクセス数:669件（2025-08-28 18:31 集計）

固定URL: https://hdl.handle.net/11094/98562

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タイトル	Low-temperature liquid-crystalline nitroxide radical
著者	NRID 1000060559558 1000060559558 ORCID 0000-0001-5043-9239 0000-0001-5043-9239 researchmap permalink Yoshiaki_Uchida Yoshiaki_Uchida Scopus Author ID 8348749200 8348749200 著者名 Uchida, Yoshiaki
	著者名 Akita, Takuya
	NRID 1000000435596 1000000435596 著者名 Ohkochi, Takuo
	著者名 Ma, Xiao Qian
	著者名 Kiyohara, Daichi
	著者名 Nakagami, Sho
	著者名 Yamazaki, Taira
	NRID 1000010283730 1000010283730 researchmap permalink read0046501 read0046501 Scopus Author ID 7201750198 7201750198 著者名 Nishiyama, Norikazu
内容	Uchida Y., Akita T., Ohkochi T., et al. Low-temperature liquid-crystalline nitroxide radical. Journal of Materials Chemistry C, (2024); https://doi.org/10.1039/D4TC04081C.
抄録	Liquid-crystalline (LC) radicals have been considered promising as metal-free paramagnetic soft materials, but those reported so far are not easy to use because of their stability and LC temperature range. Here, we report a paramagnetic LC nitroxide radical (NR) that shows durability and tractability. The new compound shows a low melting point, high chemical stability, and high vacuum and synchrotron radiation resistance. The coexistence of the four properties enables us to take photographs of the magnetic structures of the compound on a ferromagnetic iron film using photoemission electron microscopy (PEEM). We discuss the origins of these properties. The fluorine substitution near the NR moiety significantly alters the conformational ensemble to decrease the entropy in the crystal phase. It seems beneficial to focus on conformational ensembles to incorporate bulky functional moieties into LC molecules together with durability and tractability.
出版者	Royal Society of Chemistry
収録物名	Journal of Materials Chemistry C
巻(号)	13(1)
ページ	54-60
刊行年月	2024-11-15
言語	英語
ハンドルURL	https://hdl.handle.net/11094/98562
PISSN	20507526
eISSN	20507534
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.1039/D4TC04081C
アクセス権	embargoed access
権利情報	Reproduced from J. Mater. Chem. C, 2024, with permission from the Royal Society of Chemistry.
権利情報	The full-text file will be made open to the public on 15 November 2025 in accordance with the publisher's policy.
出版タイプ	Accepted Manuscript
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCTERMS.bibliographicCitation	Journal of Materials Chemistry C. 2024, 13(1), p. 54-60
DC.title	Low-temperature liquid-crystalline nitroxide radical
DC.creator	Uchida, Yoshiaki
	Akita, Takuya
	Ohkochi, Takuo
	Ma, Xiao Qian
	Kiyohara, Daichi
	Nakagami, Sho
	Yamazaki, Taira
	Nishiyama, Norikazu
DC.publisher	Royal Society of Chemistry
DC.language' scheme='DCTERMS.RFC1766	英語
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-11-15
DC.identifier	https://doi.org/10.1039/D4TC04081C
DC.description	Uchida Y., Akita T., Ohkochi T., et al. Low-temperature liquid-crystalline nitroxide radical. Journal of Materials Chemistry C, (2024); https://doi.org/10.1039/D4TC04081C.
DCTERMS.abstract	Liquid-crystalline (LC) radicals have been considered promising as metal-free paramagnetic soft materials, but those reported so far are not easy to use because of their stability and LC temperature range. Here, we report a paramagnetic LC nitroxide radical (NR) that shows durability and tractability. The new compound shows a low melting point, high chemical stability, and high vacuum and synchrotron radiation resistance. The coexistence of the four properties enables us to take photographs of the magnetic structures of the compound on a ferromagnetic iron film using photoemission electron microscopy (PEEM). We discuss the origins of these properties. The fluorine substitution near the NR moiety significantly alters the conformational ensemble to decrease the entropy in the crystal phase. It seems beneficial to focus on conformational ensembles to incorporate bulky functional moieties into LC molecules together with durability and tractability.
DC.rights	Reproduced from J. Mater. Chem. C, 2024, with permission from the Royal Society of Chemistry.
DC.rights	The full-text file will be made open to the public on 15 November 2025 in accordance with the publisher's policy.
DC.format	98562
citation_title	Low-temperature liquid-crystalline nitroxide radical
citation_author	Uchida, Yoshiaki
	Akita, Takuya
	Ohkochi, Takuo
	Ma, Xiao Qian
	Kiyohara, Daichi
	Nakagami, Sho
	Yamazaki, Taira
	Nishiyama, Norikazu
citation_publisher	Royal Society of Chemistry
citation_language	英語
citation_date	2024-11-15
citation_journal_title	Journal of Materials Chemistry C
citation_volume	13
citation_issue	1
citation_firstpage	54
citation_lastpage	60
citation_doi	https://doi.org/10.1039/D4TC04081C
citation_public_url	https://hdl.handle.net/11094/98562

Low-temperature liquid-crystalline nitroxide radical

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