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Updated: May 29, 2025

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Counter Ions Determine Self-Assembled Nanostructure and Activation Energy of Ion-Conductive Mesogens
Minwoo Rim1, Woojin Kim1, Dong-Gue Kang2
1Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea.
Abstract:
By varying counter ions of ion-conductive mesogens (ICMs) from bromide (Br), to tetrafluoroborate (BF4), and to bis(trifluoromethanesulfonyl)imide (TFSI), the ionic conductivity of ICM is systematically investigated based on their self-assembled nanostructure and activation energy. Thermal and phase transition behaviors of ICM-Br, -BF4, and -TFSI exhibit significant variation based on the anion type. These differences are further reflected in the self-assembled nanostructures of the ICMs, which are characterized through X-ray and electron diffraction experiments. Ionic conductivity measured by electrochemical impedance spectroscopy and activation energy calculated by Arrhenius equation allow us to build the relationship between self-assembled nanostructures of ICMs and their activation energy. The constructed relationship between self-assembled nanostructures and activation energy can provide valuable insights for the development of novel ion-conductive materials.
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