Magnetically Manipulable Ionic Liquid Crystals Incorporating Neutral Radical Moiety

Magnetically Manipulable Ionic Liquid Crystals Incorporating Neutral Radical Moiety Full article

Journal

ChemPlusChem
ISSN: 2192-6506

Output data

Year: 2022, Article number : e202100352, Pages count : DOI: 10.1002/cplu.202100352

Tags

ionic liquid; liquid crystal; magnetism; radicals; smectic phases

Authors

Uchida Y. ¹ , Sakaguchi Tatsunori ² , Oki Shigeaki ² , Shimono Satoshi ² , Park Jayeong ³ , Sugiyama Masahito ² , Sato Shuichi ⁴ , Zaytseva Elena ^2,5 , Mazhukin Dmitrii G. ^6,7 , Tamura Rui ²

Affiliations

1	Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
2	Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan
3	Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane, 690-8504, Japan
4	Osaka Dental University, Hirakata, Osaka, 573-114, Japan
5	Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3 Akademika Lavrentieva Ave., Novosibirsk, 630090, Russian Federation
6	N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 9 Akademika Lavrentieva Ave., Novosibirsk, 630090, Russian Federation
7	Novosibirsk State University, 2 Pirogova St., Novosibirsk, 630090, Russian Federation

With a view to fabricating a new remote input-output system by applying functional ionic liquid crystalline (ILC) materials, we have developed novel ILC compounds containing a nitroxide radical unit in the organic cations, which show an enantiotropic smectic A (SmA) phase. We have implemented the magnetic manipulation of a droplet of one of the ILC compounds on the basis of the intermolecular magnetic interactions between radical moieties. This ILC monoradical compound shows a 55 % larger increase in paramagnetic susceptibility at the solid-to-LC melting point in the first heating process than the non-ionic LC monoradical compounds. It is most likely owing to the nanosegregation of strongly bonded ionic and non-ionic moieties. The increased molar magnetic susceptibility is preserved not only in the SmA phase but also in the isotropic liquid and solid phases during the first cooling process. © 2021 Wiley-VCH GmbH

Uchida Y. , Sakaguchi T. , Oki S. , Shimono S. , Park J. , Sugiyama M. , Sato S. , Zaytseva E. , Mazhukin D.G. , Tamura R.
Magnetically Manipulable Ionic Liquid Crystals Incorporating Neutral Radical Moiety
ChemPlusChem. 2022. e202100352 . DOI: 10.1002/cplu.202100352 WOS Scopus РИНЦ

Submitted:	Jul 30, 2021
Published online:	Oct 12, 2021
Published print:	Mar 1, 2022

Web of science	WOS:000706308000001
Scopus	2-s2.0-85116944497
Elibrary	47512566
OpenAlex	W3205595144