Creation of Gyroid Nanostructured Polymer Films from Lyotropic Liquid Crystals Containing a Polymerizable Ionic Liquid as a Solvent

2021 ◽  
Vol 50 (6) ◽  
pp. 1198-1201
Author(s):  
Hiroaki Takeuchi ◽  
Takahiro Ichikawa
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Polymer Films ◽  
Lyotropic Liquid Crystals ◽  
Nanostructured Polymer

scholarly journals Ion-Conductive Nanostructured Polymer Films Formed by Photopolymerization of Lyotropic Columnar Liquid-Crystalline Monomers, Composed of a Zwitterionic Compound and a Protic Ionic Liquid

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 276 ◽  
Author(s):  
Siyu Cao ◽  
Masafumi Yoshio ◽  
Atsushi Seki
Keyword(s):  
Ionic Liquid ◽  
Polymer Films ◽  
Liquid Crystalline ◽  
Amorphous Polymer ◽  
Conductive Polymer ◽  
Ionic Conductivities ◽  
Impedance Method ◽  
Protic Ionic Liquid ◽  
Isotropic Liquid ◽  
Nanostructured Polymer

Here, we report on a new family of columnar nanostructured polymer films forming protic nanochannels that exhibit good ionic conductivities in the order of 10−4–10−3 S cm−1 at ambient temperature. These polymer films were obtained by the in situ photopolymerization of lyotropic columnar liquid crystals, consisting of a polymerizable taper-shaped zwitterionic compound and a protic ionic liquid (imidazolium bis(trifluoromethylsulfonyl)imide), in the presence of 15 wt% water. The composition of the protic ionic liquid in the mixture was changed from 40 to 60 mol%. The ionic conductivities were measured by an alternating current impedance method. The ionic conductivity increased with the increase of the protic ionic liquid. The conductivities of columnar nanostructured polymer films were about 2–3 orders of magnitude higher than those of amorphous polymer films prepared by photopolymerization of the corresponding monomers in an isotropic liquid state. The formation of nanochannels in the polymer matrices significantly enhanced the ion conduction. The present two-component lyotropic liquid-crystalline self-assembly followed by photopolymerization is a promising approach to the development of high ion-conductive polymer membranes.

Enhanced energy transfer efficiency and stability of europium β-diketonate complex in ionic liquid-based lyotropic liquid crystals

2015 ◽  
Vol 17 (31) ◽  
pp. 20322-20330 ◽  
Author(s):  
Sijing Yi ◽  
Jiao Wang ◽  
Xiao Chen
Keyword(s):  
Ionic Liquid ◽  
Energy Transfer ◽  
Liquid Crystals ◽  
Hydrogen Bonds ◽  
Self Assembly ◽  
Energy Transfer Efficiency ◽  
Lyotropic Liquid Crystals ◽  
The Self ◽  
Transfer Efficiency ◽  
Imidazolium Cations

The self-assembly of luminescent lyotropic liquid crystals with europium β-diketonate complex confined within via hydrogen bonds between P123 and imidazolium cations is demonstrated.

scholarly journals Preparation of Lyotropic Liquid Crystals and Optical Characterisation

2016 ◽  
Vol 64 ◽  
pp. 171-177 ◽  
Author(s):  
Hiromasa Goto
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Optical Microscopy ◽  
Chemical Structure ◽  
Halogen Atom ◽  
Layer Structure ◽  
Smectic Phase ◽  
Lyotropic Liquid Crystals ◽  
Pyridinium Chloride

Synthesis of an ionic liquid crystal (1-(6-(4-(4-trans-pentyl-cyclohexyl)-phenoxy)-hexyl)pyridinium chloride) showing lyotropic smectic phase was carried out. A simple reaction between phenylcyclohexane-type liquid crystal having halogen atom in the terminal and pyridine allows production of the ionic liquid crystal. The NMR measurements confirm chemical structure of the compound. Observation with polarsing optical microscopy evaluated that the compound shows fine multi-domains having fluidity. The lyotropic LC thus prepared displays smectic phase with layer structure.

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