Temperature-responsive proton-conductive liquid crystals formed by the self-assembly of zwitterionic ionic liquids

Gao, Xinpei; Lü, Fei; Dong, Bin; Zhou, Tao; Liu, Yizhi; Zheng, Liqiang

doi:10.1039/c5ra10830f

Cited by 19 publications

(11 citation statements)

References 40 publications

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“…C n IPS and MIPS were synthesized according to our previous work. , The purity of the product was ascertained by the 1 H NMR (400 MHz) in CDCl 3 or D 2 O and ESI/MS.…”

Section: Experimental Sectionmentioning

confidence: 99%

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Supramolecular Thermotropic Ionic Liquid Crystals Formed via Self-Assembled Zwitterionic Ionic Liquids

Qiao

Sun

et al. 2018

Langmuir

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Supramolecular thermotropic ionic liquid crystals (ILCs) with hexagonal and lamellar phases were fabricated by the self-assembly of zwitterionic ionic liquids, which were formed by 3-(1-alkyl-3-imidazolio) propanesulfonate with different alkyl chain lengths C n IPS (n = 12, 14, 16) and 3,4,5-tris(dodecyloxy)benzoic acid (TDBA) based on intermolecular electrostatic interactions. The phase behaviors of ILCs were investigated by differential scanning calorimetry (DSC), small-angle X-ray scattering (SAXS), and polarized optical microscopy (POM). The highly ordered and well-defined microstructure of ILCs can be considered to be proton pathways and to radically improve the ionic conductivity, suggesting the induction of proton conduction through a hopping mechanism.

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“…C n IPS and MIPS were synthesized according to our previous work. , The purity of the product was ascertained by the 1 H NMR (400 MHz) in CDCl 3 or D 2 O and ESI/MS.…”

Section: Experimental Sectionmentioning

confidence: 99%

“…C n IPS and MIPS were synthesized according to our previous work. 31,32 The purity of the product was ascertained by the 1 4.61 (t, 2H, J = 6.9 Hz), 4.26 (2H, t, J = 7.5 Hz), 2.88 (2H, t, J = 6.9 Hz), 2.42 (2H, quint, J = 6.9 Hz), 1.89 (2H, m), 1.32 (22H, m), 0.88 (t, 3H, J = 6.6 Hz).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Supramolecular Thermotropic Ionic Liquid Crystals Formed via Self-Assembled Zwitterionic Ionic Liquids

Qiao

Sun

et al. 2018

Langmuir

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“…40,41 The catanionic ionic liquid surfactant mixtures formed by 3-(1alkyl-3-imidazolio) propanesulfonate (C n IPS, n = 12, 14, and 16) and different sulfonic acids (CF 3 SO 3 H, C 6 H 5 SO 3 H, and CH 3 SO 3 H) can form micelles and liquid crystals. 42 The [C n mim]DC (n = 1 and 3, deoxycholate, DC − ) can be aggregated into different structures, such as nanosheets, nanorods, and vesicles, depending on the length of the alkyl chain in [C n mim] + . 43 The complex formed by 3-(1-hexadecyl-3-imidazolio)propanesulfonate with β-naphthalene sulfonate not only aggregates into micelles and hexagonal liquid crystals in sequence but also forms wormlike micelles with the increase of concentration.…”

Section: ■ Introductionmentioning

confidence: 99%

Influence of the Alkyl Chain Length of the Imidazole Ionic Liquid-Type Surfactants on Their Aggregation Behavior with Sodium Dodecyl Sulfate

Han

Guo

2020

Langmuir

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The influence of the alkyl chain length of the ionic liquid surfactants 1-hexadecyl-3-alkyl imidazolium bromide [C16imC n ]Br (n = 2–16) on their aggregation behavior with sodium dodecyl sulfate (SDS) in water was studied. The rheological properties, thermostability, and microstructure of the samples were characterized via a combination of rheology, cryo-transmission electron microscopy, polarization optical microscopy, and small-angle X-ray scattering. Upon the addition of SDS, the [C16imC n ]Br (n = 2, 4, 6) rodlike micelles transit into the gels with high water content. The effects of molar ratio and alkyl chain length on the viscoelasticity and thermal stability of the SDS/[C16imC n ]Br (n = 2, 4, 6) gels were studied. However, the [C16imC n ]Br (n = 8, 10, 12, 14, 16) rodlike micelles precipitate with the addition of SDS. The [C16imC n ]Br (n = 10, 12, 14, 16) gels transit to the rodlike micelles with the proper addition of SDS. The mechanism of the influence of the alkyl chain length of the [C16imC n ]Br on their aggregation behavior with SDS was proposed.

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“…More recently, liquid crystals have drawn increasing attention as potential electrolytes , due to their self-assembly into ordered structures driven by noncovalent interactions. The combination of long-range order and dynamic fluid properties of these materials favors ion transport; as such, they represent a promising approach for the development of new protonic conducting materials. − Furthermore, liquid crystalline materials are generally compatible with low-cost solution processing.…”

Section: Introductionmentioning

confidence: 99%

Amphiphilic Cyclodextrin-Based Liquid Crystals for Proton Conduction

et al. 2019

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Novel cyclodextrin (CD)-based amphiphilic poly(carboxylic acid)s that self-assemble into highly ordered smectic liquid crystalline mesophases were investigated as a novel class of protonic conductors. These structurally well-defined materials are synthesized from nontoxic and environment-friendly CDs, which possess a unique face-to-face pseudosymmetry. By taking advantage of such geometry, a series of flexible tetraethylene glycol groups terminated with a carboxylic acid functionality were introduced to the CD’s secondary face, resulting in the formation of long-range 2D hydrogen-bond networks in the smectic mesophases over a wide temperature window. This new material was found to exhibit impressive proton conductivities in solid states, up to 1.4 × 10–2 S cm–1 at 70 °C and 95% humidity. This constitutes the first report of amphiphilic CD-based liquid crystals applied as proton conductive materials.

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Temperature-responsive proton-conductive liquid crystals formed by the self-assembly of zwitterionic ionic liquids

Abstract: Nanostructured proton conductors having hexagonal and cubic structures were constructed by the self-assembly of zwitterionic ionic liquids. These nanostructured proton conductors all exhibited an assembled-structure dependent proton conduction behavior.

Cited by 19 publications

References 40 publications

Supramolecular Thermotropic Ionic Liquid Crystals Formed via Self-Assembled Zwitterionic Ionic Liquids

Supramolecular Thermotropic Ionic Liquid Crystals Formed via Self-Assembled Zwitterionic Ionic Liquids

Influence of the Alkyl Chain Length of the Imidazole Ionic Liquid-Type Surfactants on Their Aggregation Behavior with Sodium Dodecyl Sulfate

Amphiphilic Cyclodextrin-Based Liquid Crystals for Proton Conduction

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