Surface-Functionalized Ionic Liquid Crystal-Supported Ionic Liquid Phase Materials: Ionic Liquid Crystals in Mesopores

ChemPhysChem ◽  
2011 ◽  
Vol 12 (18) ◽  
pp. 3539-3546 ◽  
Author(s):  
Florian T. U. Kohler ◽  
Bruno Morain ◽  
Alexander Weiß ◽  
Mathias Laurin ◽  
Jörg Libuda ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Liquid Phase ◽  
Functionalized Ionic Liquid ◽  
Supported Ionic Liquid ◽  
Ionic Liquid Crystals

scholarly journals Inside Cover: Surface-Functionalized Ionic Liquid Crystal-Supported Ionic Liquid Phase Materials: Ionic Liquid Crystals in Mesopores (ChemPhysChem 18/2011)

ChemPhysChem ◽  
2011 ◽  
Vol 12 (18) ◽  
pp. 3486-3486
Author(s):  
Florian T. U. Kohler ◽  
Bruno Morain ◽  
Alexander Weiß ◽  
Mathias Laurin ◽  
Jörg Libuda ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Liquid Phase ◽  
Functionalized Ionic Liquid ◽  
Supported Ionic Liquid ◽  
Ionic Liquid Crystals

Synthesis and thermotropic properties of new green electrochromic ionic liquid crystals

2019 ◽  
Vol 43 (46) ◽  
pp. 18285-18293 ◽  
Author(s):  
Lucia Veltri ◽  
Gabriella Cavallo ◽  
Amerigo Beneduci ◽  
Pierangelo Metrangolo ◽  
Giuseppina Anna Corrente ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Small Molecules ◽  
Ionic Liquid Crystals ◽  
Thermotropic Properties

New liquid crystal viologens, which exhibit green electrochromic behavior in the LC phase, rarely observed for small molecules, have been developed.

scholarly journals Fatty Acid-Derived Ionic Liquid Lubricant. Protic Ionic Liquid Crystals as Protic Ionic Liquid Additives

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 710 ◽  
Author(s):  
María-Dolores Avilés ◽  
Ramón Pamies ◽  
José Sanes ◽  
Francisco-José Carrión ◽  
María-Dolores Bermúdez
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Crystal ◽  
Fatty Acid ◽  
Liquid Crystals ◽  
Water Evaporation ◽  
Protic Ionic Liquid ◽  
X Ray ◽  
Sliding Surfaces ◽  
Ionic Liquid Crystals

Fatty acids are natural products which have been studied as green lubricants. Ionic liquids are considered efficient friction reducing and wear preventing lubricants and lubricant additives. Fatty acid-derived ionic liquids have shown potential as neat lubricant and additives. Protic ionic liquid crystals (PILCs) are protic ionic liquids (PILs) where cations and anions form ordered mesophases that show liquid crystalline behavior. The adsorption of carboxylate units on sliding surfaces can enhance the lubricant performance. Ionic liquid crystal lubricants with longer alkyl chains can separate sliding surfaces more efficiently. However, they are usually solid at room temperature and, when used as additives in water, transitions to high friction coefficients and wear rates, with tribocorrosion processes occur when water evaporation takes place at the interface. In order to avoid these inconveniences, in the present work, a protic ammonium palmitate (DPA) ionic liquid crystal has been added in 1 wt.% proportion to a short chain citrate ionic liquid (DCi) with the same protic ammonium cation. A spin coated layer of (DCi + DPA) was deposited on AISI316L steel surface before the sliding test against sapphire ball. Synergy between DCi PIL and DPA PILC additive reduces friction coefficient and wear rate, without tribocorrosion processes, as shown by scanning electron microscopy (SEM)/energy dispersive X-ray microanalysis (EDX) and X-ray photoelectron spectroscopy (XPS) results.

Synthesis, characterization, and tuning of the liquid crystal properties of ionic materials based on the cyclic polyoxothiometalate [{Mo4O4S4(H2O)3(OH)2}2(P8W48O184)]36−

Soft Matter ◽  
2015 ◽  
Vol 11 (6) ◽  
pp. 1087-1099 ◽  
Author(s):  
Nancy Watfa ◽  
Sébastien Floquet ◽  
Emmanuel Terazzi ◽  
Mohamed Haouas ◽  
William Salomon ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Organic Cations ◽  
Crystal Properties ◽  
Ionic Materials ◽  
Ionic Liquid Crystals

Ionic associations between a polyoxometalate cluster and organic cations leads to the formation of ionic liquid crystals.

Mesophase transition induced by oscillatory shear in imidazolium-based ionic liquid crystals on molecular-dynamics simulations

2021 ◽  
Author(s):  
Min Liu ◽  
Hayato Shiba ◽  
Huashan Liu ◽  
Hailong Peng
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquid ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Molecular Dynamics Simulations ◽  
Oscillatory Shear ◽  
Ionic Liquid Crystals ◽  
Dynamics Simulations

Molecular dynamics simulations were performed on a 1-dodecyl-3-methylimidazolium hexafluorophosphate ([C$_{12}$mim][PF$_6$]) ionic liquid crystal (ILC) with an oscillatory shear. We found the oscillatory shear can both accelerate and suppress the mesophase...

Inducting effects of ionic liquid crystal modified-PEDOT:PSS on the performance of bulk heterojunction polymer solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (65) ◽  
pp. 52874-52881 ◽  
Author(s):  
Xiaofeng Wang ◽  
Siwei Hu ◽  
Qiujuan Li ◽  
Fan Li ◽  
Kao Yao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solar Cells ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Heterojunction Solar Cells ◽  
Anode Buffer Layer ◽  
Ionic Liquid Crystals

Photovoltaic performance was improved in P3HT/PCBM bulk-heterojunction solar cells induced by ionic liquid crystals modified PEDOT:PSS anode buffer layer.

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.

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