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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
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Magnetically Manipulable Ionic Liquid Crystals Incorporating Neutral Radical Moiety.
Yoshiaki Uchida1, Tatsunori Sakaguchi2, Shigeaki Oki2
1Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan.
Chempluschem
|October 12, 2021
Summary
Novel ionic liquid crystalline (ILC) materials with nitroxide radicals enable magnetic manipulation. These functional ILC compounds exhibit enhanced paramagnetic properties, paving the way for new remote input-output systems.
Area of Science:
- Materials Science
- Supramolecular Chemistry
- Organic Electronics
Background:
- Functional ionic liquid crystalline (ILC) materials are explored for advanced applications.
- Developing remote input-output systems requires novel responsive materials.
- Nitroxide radicals offer unique magnetic properties for material design.
Purpose of the Study:
- To synthesize novel ILC compounds incorporating nitroxide radicals.
- To investigate the magnetic properties and phase behavior of these new ILCs.
- To demonstrate magnetic manipulation using these functional materials.
Main Methods:
- Synthesis of ILC compounds with nitroxide radical units in organic cations.
- Characterization of enantiotropic smectic A (SmA) phase behavior.
- Magnetic manipulation of ILC droplets based on intermolecular magnetic interactions.
- Measurement of paramagnetic susceptibility changes during phase transitions.
Main Results:
- Developed novel ILC compounds exhibiting an enantiotropic SmA phase.
- Successfully demonstrated magnetic manipulation of ILC droplets.
- Observed a 55% increase in paramagnetic susceptibility at the solid-to-ILC melting point.
- Attributed increased susceptibility to nanosegregation of ionic and non-ionic moieties.
- Confirmed preservation of enhanced magnetic susceptibility across solid, SmA, and isotropic liquid phases.
Conclusions:
- Novel nitroxide radical-containing ILCs are synthesized and characterized.
- These materials exhibit enhanced magnetic properties and enable magnetic manipulation.
- The findings support the development of ILC-based remote input-output systems.
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