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

Number of Access:669（2025-08-28 23:57 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/98562

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Title	Low-temperature liquid-crystalline nitroxide radical
Creator	NRID 1000060559558 1000060559558 ORCID 0000-0001-5043-9239 0000-0001-5043-9239 researchmap permalink Yoshiaki_Uchida Yoshiaki_Uchida Scopus Author ID 8348749200 8348749200 CreatorName Uchida, Yoshiaki
	CreatorName Akita, Takuya
	NRID 1000000435596 1000000435596 CreatorName Ohkochi, Takuo
	CreatorName Ma, Xiao Qian
	CreatorName Kiyohara, Daichi
	CreatorName Nakagami, Sho
	CreatorName Yamazaki, Taira
	NRID 1000010283730 1000010283730 researchmap permalink read0046501 read0046501 Scopus Author ID 7201750198 7201750198 CreatorName Nishiyama, Norikazu
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.
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.
Publisher	Royal Society of Chemistry
Source Title	Journal of Materials Chemistry C
Volume (Issue)	13(1)
Page	54-60
Date of Issued	2024-11-15
Language	English
Handle URL	https://hdl.handle.net/11094/98562
PISSN	20507526
eISSN	20507534
Relation.isVersionOf	DOI (Publisher Version) https://doi.org/10.1039/D4TC04081C
Access Rights	embargoed access
CopyRight	Reproduced from J. Mater. Chem. C, 2024, with permission from the Royal Society of Chemistry.
CopyRight	The full-text file will be made open to the public on 15 November 2025 in accordance with the publisher's policy.
oaire:version	Accepted Manuscript
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
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	English
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	English
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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