Colloid & Polymer Science, Год журнала: 2017, Номер 295(5), С. 773 - 782
Опубликована: Март 10, 2017
Язык: Английский
Chemical Reviews, Год журнала: 2016, Номер 116(8), С. 4643 - 4807
Опубликована: Апрель 18, 2016
This Review covers the recent developments (2005–2015) in design, synthesis, characterization, and application of thermotropic ionic liquid crystals. It was designed to give a comprehensive overview "state-of-the-art" field. The discussion is focused on low molar mass dendrimeric mesogens, as well selected metal-containing compounds (metallomesogens), but some references polymeric and/or lyotropic crystals particularly liquids will also be provided. Although zwitterionic mesoionic mesogens are treated extent, emphasis directed toward liquid-crystalline materials consisting organic cations organic/inorganic anions that not covalently bound interact via electrostatic other noncovalent interactions.
Язык: Английский
Процитировано
698
Current Opinion in Electrochemistry, Год журнала: 2021, Номер 30, С. 100810 - 100810
Опубликована: Июль 19, 2021
Язык: Английский
Процитировано
18
Liquid Crystals, Год журнала: 2018, Номер 46(8), С. 1252 - 1265
Опубликована: Ноя. 20, 2018
A series of novel star-shaped ionic liquid crystals (ILCs) compounds with various counterions (derived from HBF4, HPF6, CF3COOH, d-MH-SO3H, H3PO4, p-Toluenesulfonic acid) were designed and synthesised starting precursors pyridines crystalline monomer cholesteryl 4-bromobutanoate. Inducing by use self-assembly due to electrostatic attraction ion clusters was one the most essential factors for intermolecular separation. The chemical structures, properties, behaviour conductivity these researched during multiple experimental techniques. ILCs showed a smectic (SmA) mesophase. d-spacing increased slightly increase volume anion. clearing temperatures pyridinium salts suggested that effect stabilisation on SmA structures in order H2PO4−>BF4−>TS−>D-MH-SO3−>CF3COO−>PF6−. All displayed It noted (σ) anion size temperature.
Язык: Английский
Процитировано
12
RSC Advances, Год журнала: 2016, Номер 6(32), С. 26791 - 26799
Опубликована: Янв. 1, 2016
Novel pyridinium-based liquid-crystalline ionomers were synthesized, which showed various mesophases due to the ion aggregations of ionic mesogens.
Язык: Английский
Процитировано
8
Polymers for Advanced Technologies, Год журнала: 2018, Номер 29(12), С. 3106 - 3113
Опубликована: Сен. 14, 2018
A series of quaternary phosphonium ions–containing main‐chain ionic liquid‐crystalline polymers with tri‐tolylphosphines as cationic groups have been synthesized and characterized. The molecular structures all compounds determined. Test results show that the liquid crystal properties polymer, polymers, lower glass transition temperature wider range, BF 4 − PF 6 even can make drop to more than 10°. exhibit only during rising, smectic phase, chiral nematic mesophases. phosphorus cations good bactericidal performance, but anion has no effect on properties.
Язык: Английский
Процитировано
8
Liquid Crystals, Год журнала: 2018, Номер 46(4), С. 503 - 511
Опубликована: Сен. 14, 2018
A series of quaternary phosphonium salts based on ionic liquid-crystalline polymers which were synthesised by triphenylphosphine and brominated polysiloxanes containing cholesteryl mesogens. The chemical structures, liquid crystalline properties antimicrobial performance [ChP]Brs investigated a test methods. showed smectic mesophase with wide temperature range phase in the heating cooling cycles. glass transition clearing point decreased increase content. While phosphorus content lead to antibacterial polymers. crystal polymer provides full spatial support for complete contact between ions bacteria, So that salt can be fully sterilised.
Язык: Английский
Процитировано
6
IOP Conference Series Materials Science and Engineering, Год журнала: 2018, Номер 434, С. 012080 - 012080
Опубликована: Дек. 3, 2018
Liquid crystal polymer of Cholesteryl Acrylate-Indium Tin Oxide (PolyChoA-ITO) in this study has been successfully synthesized by UV curing method, which variations ITO concentrations i.e. 0, 10, 20, 30, 40, and 50% w/w. This research using as a doping on cholesteryl acrylate monomer subsequently polymerized. Characterization PolyChoA-ITO FTIR, that resulted peak at 1600-1750 cm-1 identifies the stretching vibration C=O group. The wavelength also shows interaction with PolyCho A-ITO. X Ray Diffraction (XRD) showed some peaks 2θ = 7,53□; 15,27□; 8,10□; 30,40□; is typical acrylate. SEM image agglomerated surface uniform. Conductivity properties higher concentration added greater conductivity value. maximum value 10% 50.352 × 10-8 S/m.
Язык: Английский
Процитировано
4
European Polymer Journal, Год журнала: 2021, Номер 150, С. 110417 - 110417
Опубликована: Март 23, 2021
Язык: Английский
Процитировано
4
Polymers for Advanced Technologies, Год журнала: 2022, Номер 33(5), С. 1628 - 1641
Опубликована: Янв. 27, 2022
Abstract Series of ionic liquid crystalline polymers (ILCPs) containing bipyridinium groups were synthesized by self‐assembly technology, and the chemical structure, behavior, property, antistatic property investigated various techniques. All exhibit good thermotropic crystal on heating cycle. The precursor bromo‐polyesters displayed nematic phase, but ILCPs (IPPy‐Br, IPP‐BF 4 IPP‐PF 6 series) bipyridine different counter‐anions showed smectic C phase. effects counter‐ions behavior discussed in this study. properties these a four‐probe measuring instrument. surface resistivity was slight sensitivity to water absorption due special structure conductive channels ILCPs. It found that all exhibited superior performance conductivity properties. In Br − , BF PF counter‐ions, IPPy‐BF series with maximum influence anion ordered structure.
Язык: Английский
Процитировано
3
Liquid Crystals, Год журнала: 2022, Номер 50(2), С. 260 - 269
Опубликована: Сен. 7, 2022
In this paper, d-camphoryl chloride, terephthaloyl hydroquinone and 2,3-dibromosuccinyl chloride were used as raw materials to synthesise the main-chain liquid crystalline polymers by condensation polymerisation. A series of ionic with triphenylphosphine cationic group successfully prepared grafting onto polymer. By characterisation, we found that main chain crystal polymer containing quaternary phosphonium ions had low glass transition temperature, high conductivity strong antibacterial properties. The ions-containing liquid-crystalline show Smectic phase, nematic phase. experiments showed good properties, ability was also enhanced increase phosphorus content. addition, orientation structure a significant influence on its
Язык: Английский
Процитировано
3