Amino acid/crown ether hybrid materials: how charge affects liquid crystalline self-assembly

Soft Matter ◽  
2017 ◽  
Vol 13 (45) ◽  
pp. 8379-8391 ◽  
Author(s):  
Korinna Bader ◽  
Manuel M. Neidhardt ◽  
Tobias Wöhrle ◽  
Robert Forschner ◽  
Angelika Baro ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Amino Acid ◽  
Crown Ether ◽  
Hybrid Materials ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Ionic Liquid Crystals

Introduction of charge simply converted non-conventional tyrosine/crown ether liquid crystals into ionic liquid crystals under change of mesophase type.

Self-Assembly Behavior of N-Methly-N-Hexadecyl-Pyrrolidinium Bromide in Water

2012 ◽  
Vol 557-559 ◽  
pp. 611-614 ◽  
Author(s):  
Jin Hua He ◽  
Cui Hua Li ◽  
Lian An Qian ◽  
Jian Hong Liu ◽  
Qian Ling Zhang
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Crystalline Phase ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Hexagonal Phase ◽  
The Self ◽  
Package Effect ◽  
Ionic Liquid Crystals ◽  
Assembly Behavior

N-methyl-N-hexadecylpyrrolidinium bromide (IL) was synthesized for the design of ionic liquid crystals which is a fascinating class of molecular materials, offering the combination of order and mobility. In binary mixtures with water, lyotropic liquid crystalline phase appears in the range of IL content from 35% to 70% and the temperature range from -1.1 to 24 °C in the heating run. The SAXS curves explored the self-assembly processes and hexagonal phase of the IL apparent sol. The saturated aliphatic ionic liquid in water assemble less tightly compared with aromatic ionic liquid based on imidazolium in water, which is due to the absence of aromatic package effect.

scholarly journals Self-assembly and biological activities of ionic liquid crystals derived from aromatic amino acids

2018 ◽  
Vol 20 (31) ◽  
pp. 20371-20381 ◽  
Author(s):  
Manuel M. Neidhardt ◽  
Katharina Schmitt ◽  
Angelika Baro ◽  
Carmen Schneider ◽  
Ursula Bilitewski ◽  
...  
Keyword(s):  
Amino Acids ◽  
Ionic Liquid ◽  
Biological Activity ◽  
Liquid Crystals ◽  
Amino Acid ◽  
Self Assembly ◽  
Biological Activities ◽  
Aromatic Amino Acids ◽  
Ionic Liquid Crystals

Does the mesomorphic behaviour of l-amino acid-based ILCs correlate with biological activity?

Liquid-crystalline behaviour and electrorheological effect of phthalocyanine-based ionic liquid crystals

2020 ◽  
pp. 1-10
Author(s):  
Aikebaier Reheman ◽  
Shuangying Hu ◽  
Lianjun Cao ◽  
Danhua Xie ◽  
Guiyang Yan ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Electrorheological Effect ◽  
Ionic Liquid Crystals

scholarly journals Self‐Assembly of Aminocyclopropenium Salts: En Route to Deltic Ionic Liquid Crystals

2020 ◽  
Vol 59 (26) ◽  
pp. 10557-10565
Author(s):  
Juri Litterscheidt ◽  
Jeffrey S. Bandar ◽  
Max Ebert ◽  
Robert Forschner ◽  
Korinna Bader ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Self Assembly ◽  
Ionic Liquid Crystals

Liquid-crystalline behavior and ferroelectric property of viologen-based ionic liquid crystals

2020 ◽  
Vol 301 ◽  
pp. 112369 ◽  
Author(s):  
Yanxing Zheng ◽  
Jiwei Wang ◽  
Xinqiao Tang ◽  
Lei Zhang ◽  
Fanbao Meng
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Ferroelectric Property ◽  
Liquid Crystalline ◽  
Ionic Liquid Crystals

scholarly journals Oxadiazolyl-Pyridinium as Cationic Scaffold for Fluorinated Ionic Liquid Crystals

2021 ◽  
Vol 11 (21) ◽  
pp. 10347
Author(s):  
Melina S. Weber ◽  
Margit Schulze ◽  
Giuseppe Lazzara ◽  
Antonio Palumbo Piccionello ◽  
Andrea Pace ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Alkyl Chain ◽  
Scanning Calorimetry ◽  
New Class ◽  
Structural Variables ◽  
Ionic Liquid Crystals ◽  
Thermotropic Properties

The synthesis and characterization of a new class of 1,2,4-oxadiazolylpyridinium as a cationic scaffold for fluorinated ionic liquid crystals is herein described. A series of 12 fluorinated heterocyclic salts based on a 1,2,4-oxadiazole moiety, connected through its C(5) or C(3) to an N-alkylpyridinium unit and a perfluoroheptyl chain, differing in the length of the alkyl chain and counterions, has been synthesized. As counterions iodide, bromide and bis(trifluoromethane)sulfonimide have been considered. The synthesis, structure, and liquid crystalline properties of these compounds are discussed on the basis of the tuned structural variables. The thermotropic properties of this series of salts have been investigated by differential scanning calorimetry and polarized optical microscopy. The results showed the existence of an enantiotropic mesomorphic smectic liquid crystalline phase for six bis(trifluoromethane)sulfonimide salts.

scholarly journals NMR Spectroscopic Studies of Cation Dynamics in Symmetrically-Substituted Imidazolium-Based Ionic Liquid Crystals

2020 ◽  
Vol 21 (14) ◽  
pp. 5024
Author(s):  
Debashis Majhi ◽  
Andrei V. Komolkin ◽  
Sergey V. Dvinskikh
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Orientational Order ◽  
Soft Materials ◽  
Spectroscopic Studies ◽  
Single Chain ◽  
Self Assembling ◽  
Ionic Liquid Crystals ◽  
Cation Size

Ionic liquid crystals (ILCs) present a new class of non-molecular soft materials with a unique combination of high ionic conductivity and anisotropy of physicochemical properties. Symmetrically-substituted long-chain imidazolium-based mesogenic ionic liquids exhibiting a smectic liquid crystalline phase were investigated by solid state NMR spectroscopy and computational methods. The aim of the study was to reveal the correlation between cation size and structure, local dynamics, and orientational order in the layered mesophase. The obtained experimental data are consistent with the model of a rod-shaped cation with the two chains aligned in opposite directions outward from the imidazolium core. The alignment of the core plane to the phase director and the restricted conformations of the chain segments were determined and compared to those in single-chain counterparts. The orientational order parameter S~0.5–0.6 of double-chain ionic liquid crystals is higher than that of corresponding single-chain analogues. This is compatible with the enhanced contribution of van der Waals forces to the stabilization of smectic layers. Increased orientational order for the material with Br− counterions, which exhibit a smaller ionic radius and higher ability to form hydrogen bonds as compared to that of BF4−, also indicated a non-negligible influence of electrostatic and hydrogen bonding interactions. The enhanced rod-shape character and higher orientational order of symmetrically-substituted ILCs can offer additional opportunities in the design of self-assembling non-molecular materials.

scholarly journals Ionic Liquid Crystals: Self-assembly of Imidazolium Salts Containing an L-Glutamic Acid Moiety

2008 ◽  
Vol 37 (5) ◽  
pp. 538-539 ◽  
Author(s):  
Sanami Yazaki ◽  
Yuko Kamikawa ◽  
Masafumi Yoshio ◽  
Atsushi Hamasaki ◽  
Tomohiro Mukai ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Glutamic Acid ◽  
Self Assembly ◽  
Imidazolium Salts ◽  
Acid Moiety ◽  
Ionic Liquid Crystals

scholarly journals Self-Assembly of Supramolecular Complexes of Charged Conjugated Polymers and Imidazolium-Based Ionic Liquid Crystals

Giant ◽  
2021 ◽  
pp. 100088
Author(s):  
Shanju Zhang ◽  
Evan Beach ◽  
Paul T. Anastas ◽  
Lisa D. Pfefferle ◽  
Chinedum O. Osuji
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Conjugated Polymers ◽  
Self Assembly ◽  
Supramolecular Complexes ◽  
Ionic Liquid Crystals

Self-Assembly of Imidazolium-Based Rodlike Ionic Liquid Crystals: Transition from Lamellar to Micellar Organization

2010 ◽  
Vol 16 (15) ◽  
pp. 4588-4601 ◽  
Author(s):  
Xiaohong Cheng ◽  
Xueqing Bai ◽  
Shan Jing ◽  
Helgard Ebert ◽  
Marko Prehm ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Self Assembly ◽  
Ionic Liquid Crystals
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