scholarly journals Magnetic and Electric Properties of Organic Nitroxide Radical Liquid Crystals and Ionic Liquids

10.5772/39120 ◽  
2012 ◽  
Author(s):  
Rui Tamura ◽  
Yoshiaki Uchida ◽  
Katsuaki Suzuki
Keyword(s):  
Ionic Liquids ◽  
Liquid Crystals ◽  
Nitroxide Radical ◽  
Electric Properties ◽  
Magnetic And Electric Properties

scholarly journals Ion conformation and orientational order in a dicationic ionic liquid crystal studied by solid-state nuclear magnetic resonance spectroscopy

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Debashis Majhi ◽  
Sergey V. Dvinskikh
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Crystals ◽  
Bond Order ◽  
Van Der Waals ◽  
Orientational Order ◽  
Smectic Phase ◽  
Side Chains ◽  
Dicationic Ionic Liquid ◽  
Ionic Liquid Crystals

AbstractIonic liquids crystals belong to a special class of ionic liquids that exhibit thermotropic liquid-crystalline behavior. Recently, dicationic ionic liquid crystals have been reported with a cation containing two single-charged ions covalently linked by a spacer. In ionic liquid crystals, electrostatic and hydrogen bonding interactions in ionic sublayer and van der Waals interaction in hydrophobic domains are the main forces contributing to the mesophase stabilization and determining the molecular orientational order and conformation. How these properties in dicationic materials are compared to those in conventional monocationic analogs? We address this question using a combination of advanced NMR methods and DFT analysis. Dicationic salt 3,3′-(1,6-hexanediyl)bis(1-dodecylimidazolium)dibromide was studied. Local bond order parameters of flexible alkyl side chains, linker chain, and alignment of rigid polar groups were analyzed. The dynamic spacer effectively “decouples” the motion of two ionic moieties. Hence, local order and alignment in dicationic mesophase were similar to those in analogous single-chain monocationic salts. Bond order parameters in the side chains in the dicationic smectic phase were found consistently lower compared to double-chain monocationic analogs, suggesting decreasing contribution of van der Waals forces. Overall dication reorientation in the smectic phase was characterized by low values of orientational order parameter S. With increased interaction energy in the polar domain the layered structure is stabilized despite less ordered dications. The results emphasized the trends in the orientational order in ionic liquid crystals and contributed to a better understanding of interparticle interactions driving smectic assembly in this and analogous ionic mesogens.

Synthesis, Crystal Structure, and Magnetic and Electric Properties of the Cross-Linked Chain Cobalt Oxychloride Ba5Co5ClO13

2001 ◽  
Vol 158 (2) ◽  
pp. 175-179 ◽  
Author(s):  
K. Yamaura ◽  
D.P. Young ◽  
T. Siegrist ◽  
C. Besnard ◽  
C. Svensson ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Electric Properties ◽  
Magnetic And Electric Properties ◽  
The Cross

Tuning of luminescence color of π-conjugated liquid crystals through co-assembly with ionic liquids

2017 ◽  
Vol 5 (38) ◽  
pp. 9972-9978 ◽  
Author(s):  
Masato Mitani ◽  
Masafumi Yoshio ◽  
Takashi Kato
Keyword(s):  
Ionic Liquids ◽  
Charge Transfer ◽  
Liquid Crystals ◽  
Intramolecular Charge Transfer ◽  
Supramolecular Assembly ◽  
Luminescence Color

Excited intramolecular charge transfer states affect luminescence color of the supramolecular assembly formed by amphiphilic liquid crystals and ionic liquids.

scholarly journals Preparation, Magnetic and Electric Properties of (110)-Oriented Ordered Fe2-xTixO3 Thin Films

2014 ◽  
Vol 61 (S1) ◽  
pp. S330-S332
Author(s):  
T. Matsumoto ◽  
N. Suzuki ◽  
S. Kanamaru ◽  
H. Hashimoto ◽  
M. Nakanishi ◽  
...  
Keyword(s):  
Thin Films ◽  
Electric Properties ◽  
Magnetic And Electric Properties

Paleoclimate investigation based on magnetic and electric properties of sediments in the basin of Lake Ferto (Neusiedlersee)

1999 ◽  
Author(s):  
A. Jelinowskal ◽  
M. Menvielle ◽  
L. Szarka ◽  
P. Tucholkal ◽  
B. V. Wesztergom ◽  
...  
Keyword(s):  
Electric Properties ◽  
Magnetic And Electric Properties

scholarly journals Designing Functional Polyoxometalate-Based Ionic Liquid Crystals and Ionic Liquids

2019 ◽  
Vol 2020 (3) ◽  
pp. 228-247 ◽  
Author(s):  
Yohan Martinetto ◽  
Bruce Pégot ◽  
Catherine Roch-Marchal ◽  
Betty Cottyn-Boitte ◽  
Sébastien Floquet
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Crystals ◽  
Ionic Liquid Crystals
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