Large negative magneto-LC effects induced by racemic dimerization of liquid crystalline nitroxide radicals with a terminal cyano group

Akita, Takuya; Kiyohara, Daichi; Yamazaki, Taira; Uchida, Yoshiaki; Nishiyama, Norikazu

doi:https://doi.org/10.1039/c7tc04699e

Large negative magneto-LC effects induced by racemic dimerization of liquid crystalline nitroxide radicals with a terminal cyano group

Akita, Takuya; Kiyohara, Daichi; Yamazaki, Taira et al.

Journal of Materials Chemistry C, 2017, 5(47), 12457-12465

Number of Access:755（2025-08-28 23:59 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/91519

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Title	Large negative magneto-LC effects induced by racemic dimerization of liquid crystalline nitroxide radicals with a terminal cyano group
Creator	CreatorName Akita, Takuya
	CreatorName Kiyohara, Daichi
	CreatorName Yamazaki, Taira
	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
	NRID 1000010283730 1000010283730 researchmap permalink read0046501 read0046501 Scopus Author ID 7201750198 7201750198 CreatorName Nishiyama, Norikazu
Description	Akita T., Kiyohara D., Yamazaki T., et al. Large negative magneto-LC effects induced by racemic dimerization of liquid crystalline nitroxide radicals with a terminal cyano group. Journal of Materials Chemistry C 5, 12457 (2017); https://doi.org/10.1039/c7tc04699e.
Abstract	This article reports the synthesis and mesomorphism of new nitroxide radical compounds with a terminal cyano group and discusses the magneto-LC effects in the new compounds; one of the new compounds shows the largest decrease of paramagnetic susceptibility at the crystalline-to-liquid crystalline (LC) phase transition (negative magneto-LC effects) in the all-organic LC radicals reported thus far. The origins of the phenomenon are rationalized on the basis of the racemic magnetic dipolar interaction model using electron paramagnetic resonance (EPR) spectroscopy; the temperature dependences of the Lorentzian and Gaussian components of the line widths obtained by fitting EPR spectra with Voigt function provide important insights.
Publisher	Royal Society of Chemistry
Source Title	Journal of Materials Chemistry C
Volume (Issue)	5(47)
Page	12457-12465
Date of Issued	2017-11-22
Language	English
Handle URL	https://hdl.handle.net/11094/91519
eISSN	20507526
NCID	AA12605026
Relation.isVersionOf	DOI (Publisher Version) https://doi.org/10.1039/c7tc04699e
Access Rights	open access
CopyRight	Reproduced from J. Mater. Chem. C, 2017, 5, 12457-12465 with permission from the Royal Society of Chemistry.
oaire:version	Accepted Manuscript
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Journal of Materials Chemistry C. 2017, 5(47), p. 12457-12465
DC.title	Large negative magneto-LC effects induced by racemic dimerization of liquid crystalline nitroxide radicals with a terminal cyano group
DC.creator	Akita, Takuya
	Kiyohara, Daichi
	Yamazaki, Taira
	Uchida, Yoshiaki
	Nishiyama, Norikazu
DC.publisher	Royal Society of Chemistry
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2017-11-22
DC.identifier	https://doi.org/10.1039/c7tc04699e
DC.description	Akita T., Kiyohara D., Yamazaki T., et al. Large negative magneto-LC effects induced by racemic dimerization of liquid crystalline nitroxide radicals with a terminal cyano group. Journal of Materials Chemistry C 5, 12457 (2017); https://doi.org/10.1039/c7tc04699e.
DCTERMS.abstract	This article reports the synthesis and mesomorphism of new nitroxide radical compounds with a terminal cyano group and discusses the magneto-LC effects in the new compounds; one of the new compounds shows the largest decrease of paramagnetic susceptibility at the crystalline-to-liquid crystalline (LC) phase transition (negative magneto-LC effects) in the all-organic LC radicals reported thus far. The origins of the phenomenon are rationalized on the basis of the racemic magnetic dipolar interaction model using electron paramagnetic resonance (EPR) spectroscopy; the temperature dependences of the Lorentzian and Gaussian components of the line widths obtained by fitting EPR spectra with Voigt function provide important insights.
DC.rights	Reproduced from J. Mater. Chem. C, 2017, 5, 12457-12465 with permission from the Royal Society of Chemistry.
DC.format	91519
citation_title	Large negative magneto-LC effects induced by racemic dimerization of liquid crystalline nitroxide radicals with a terminal cyano group
citation_author	Akita, Takuya
	Kiyohara, Daichi
	Yamazaki, Taira
	Uchida, Yoshiaki
	Nishiyama, Norikazu
citation_publisher	Royal Society of Chemistry
citation_language	English
citation_date	2017-11-22
citation_journal_title	Journal of Materials Chemistry C
citation_volume	5
citation_issue	47
citation_firstpage	12457
citation_lastpage	12465
citation_doi	https://doi.org/10.1039/c7tc04699e
citation_public_url	https://hdl.handle.net/11094/91519

Large negative magneto-LC effects induced by racemic dimerization of liquid crystalline nitroxide radicals with a terminal cyano group

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