Novel nitroxide biradical probe with spiro-fused rigid core for EPR determination of rotational mobility and orientational order of soft materials

Bogdanov, Alexey V.; Tamura, Rui; Vorobiev, Andrey Kh.

doi:10.1016/j.cplett.2020.137432

Cited by 4 publications

(1 citation statement)

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“…Noteworthy is the fact that appreciable magnetic interactions were observed in all of the magnetic solid, ILC and isotropic (IL) phases of 6 a in the first heating and cooling runs. It is desirable to find very stable LC monoradical compounds that are easily accessible and can exhibit a relatively large positive magneto‐LC effect enough to use as the metal‐free magnetic soft materials for biomedical applications, [56,58,59] ion‐conductive low magnetic sensors, [60] and an EPR LC spin‐probe to estimate the molecular dynamics and orientational order parameters in diamagnetic ILC compounds [23,61] …”

Section: Discussionmentioning

confidence: 99%

Magnetically Manipulable Ionic Liquid Crystals Incorporating Neutral Radical Moiety

et al. 2021

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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.

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Section: Discussionmentioning

confidence: 99%