Design Principles for Triggerable Polymeric Amphiphiles with Mesogenic Side Chains for Multiscale Responses with Liquid Crystals

2018 ◽  
Vol 51 (5) ◽  
pp. 1978-1985 ◽  
Author(s):  
Lisa Adamiak ◽  
Joel Pendery ◽  
Jiawei Sun ◽  
Kazuki Iwabata ◽  
Nathan C. Gianneschi ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Design Principles ◽  
Side Chains ◽  
Polymeric Amphiphiles

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.

Fluorescence behavior of polymer liquid crystals with mesogenic cyanobiphenyl side chains

1993 ◽  
Vol 26 (7) ◽  
pp. 1590-1594 ◽  
Author(s):  
Seiji Kurihara ◽  
Tomiki Ikeda ◽  
Shigeo Tazuke
Keyword(s):  
Liquid Crystals ◽  
Side Chains ◽  
Polymer Liquid ◽  
Polymer Liquid Crystals

Photochemically induced isothermal phase transition in polymer liquid crystals with mesogenic cyanobiphenyl side chains

1990 ◽  
Vol 23 (17) ◽  
pp. 3938-3943 ◽  
Author(s):  
Tomiki Ikeda ◽  
Seiji Kurihara ◽  
Durga B. Karanjit ◽  
Shigeo Tazuke
Keyword(s):  
Phase Transition ◽  
Liquid Crystals ◽  
Side Chains ◽  
Polymer Liquid ◽  
Polymer Liquid Crystals

Encapsulating propeller-like columnar liquid crystals with an aromatic outer shell: influence of phenoxy-terminated side chains on the phase behaviour of triphenylbenzenes

Soft Matter ◽  
2018 ◽  
Vol 14 (31) ◽  
pp. 6409-6414 ◽  
Author(s):  
Korinna Bader ◽  
Tobias Wöhrle ◽  
Esra Öztürk ◽  
Angelika Baro ◽  
Sabine Laschat
Keyword(s):  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Outer Shell ◽  
Phase Behaviour ◽  
Side Chains

Liquid crystalline triphenylbenzenes carrying peripheral phenoxy units stack in helical columns with an aromatic outer shell.

Discotic liquid crystals of transition metal complexes X. Phthalocyanine derivatives substituted withn-alkyloxyphenyl side chains

1991 ◽  
Vol 10 (3) ◽  
pp. 357-368 ◽  
Author(s):  
Kazuchika Ohta ◽  
Takuya Watanabe ◽  
Satoshi Tanak ◽  
Testsuya Fujimoto ◽  
Iwao Yamamoto ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Side Chains ◽  
Discotic Liquid Crystals

scholarly journals Lamellar Liquid Crystals of In-Plane Lying Rod-Like Mesogens with Designer Side-Chains: The Case of Sliding versus Locked Layers

2018 ◽  
Vol 24 (60) ◽  
pp. 16072-16084 ◽  
Author(s):  
Marko Prehm ◽  
Claudia Enders ◽  
Xiaobin Mang ◽  
Xiangbing Zeng ◽  
Feng Liu ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Side Chains ◽  
Lamellar Liquid Crystals
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