Nanostructured liquid-crystalline polymer films for ionic actuators: self-assembly of photopolymerizable ionic itaconate with an ionic liquid

Wu, Che-Hao; Yoshio, Masafumi

doi:10.1039/d3tc01441j

Cited by 3 publications

(2 citation statements)

References 41 publications

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“…[ 9,29–32 ] Notably, it is worth highlighting that the P Cub /IL(40) membrane contains only 13.3 wt% ionic liquid, significantly lower than reported high‐performance actuators. [ 26,27 ]…”

Section: Resultsmentioning

confidence: 99%

“…By harnessing the influence of molecular shape and interactions on self‐assembled ionic liquid crystals, we could effectively control resulting morphologies and subsequently polymerize them to obtain free‐standing LC membranes. We have previously reported several nanostructured LC membrane‐based actuators with hexagonally packed columnar (Col h ) [ 25 ] and layered (Sm) morphologies, [ 26 ] showcasing exceptional bendability even with low ionic liquid content (<15 wt%). However, these structures necessitate intricate alignment treatment of 1D or 2D pathways to achieve optimal performance.…”

Section: Introductionmentioning

confidence: 99%

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Mechanically Tough Micellar Cubic Liquid‐Crystalline Polymer Electrolytes for Electromechanical Actuators

Yoshio,

Wu,

Liu

2024

Adv Funct Materials

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This study presents a novel micellar cubic ionic liquid‐crystalline polymer electrolyte, featuring an alignment‐free spherical structure with unimpeded 3D ionic pathways, aimed at enhancing the performance of an ionic electroactive polymer actuator. The development involved creating a mechanically tough and high ion‐conductive cubic polymer film through the self‐assembly of a wedge‐shaped vinyl imidazolium salt and an imidazolium ionic liquid, followed by in situ photopolymerization. The 300 µm‐thick‐trilayer films, consisting of the cubic polymer electrolyte sandwiched between poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) (PEDOT:PSS) electrodes, exhibit remarkable capabilities. These include bearing substantial loads of 4 g with a high blocking force under a DC voltage of 2 V, achieving a high bending strain of 0.63% under a low input voltage (±2 V, 0.1 Hz), and boasting a maximum response frequency of 70 Hz. These properties position the material for potential applications in soft robots and tactile sensing devices.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanically Tough Micellar Cubic Liquid‐Crystalline Polymer Electrolytes for Electromechanical Actuators

Yoshio,

Wu,

Liu

2024

Adv Funct Materials

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Lyotropic ionic liquid crystal gels derived from polyimidazolium hydrogen sulfate for enhanced proton conductivity

Liu,

Tan,

Wang

et al. 2024

J of Applied Polymer Sci

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Anisotropic gels developed from polymer networks accommodating lyotropic liquid crystals are promising electrolytes but electrochemically inert polymers prevent ions from being conducted efficiently. In this work, we synthesized protic ionic liquid polymer in lyotropic ionic liquid crystal to improve proton conduction across the polymer skeleton in anisotropic gels. In situ polymerization of 1‐vinylimidazolium hydrogen sulfate ionic liquid dissolved in aqueous 1‐tetradecyl‐3‐methylimidazolium hydrogen sulfate lyotropic liquid crystal gave chemical liquid crystal gels exhibiting both dynamic order and mechanical strength. The protic ionic liquid polymer bridged the hydrogen bond chains between neighboring ionic lyotropic liquid crystal domains to give a proton conductivity of 117 mS cm−1 at 25°C. Macroscopic alignment of the liquid crystal gel achieved by mechanical shearing promoted proton conductivity to 137 mS cm−1. The macroscopically aligned liquid crystal gel acted stably in a fuel cell device, delivering a peak power density 2.95 times higher than the unaligned one. Gelation of lyotropic ionic liquid crystals with protic ionic liquid polymer provides an effective strategy to develop anisotropic gel electrolytes for electrochemical devices.

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Constructing liquid crystalline elastomer multi-fold gratings with side-on epoxy liquid crystalline monomers

Wei,

Song,

Feng

et al. 2024

Liquid Crystals

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Nanostructured liquid-crystalline polymer films for ionic actuators: self-assembly of photopolymerizable ionic itaconate with an ionic liquid

Abstract: The development of nanostructured polymers that create organized ion-transport pathways represents a promising approach for achieving efficient electromechanical conversion. To this end, a durable layered liquid-crystalline (LC) polymer film has...

Cited by 3 publications

References 41 publications

Mechanically Tough Micellar Cubic Liquid‐Crystalline Polymer Electrolytes for Electromechanical Actuators

Mechanically Tough Micellar Cubic Liquid‐Crystalline Polymer Electrolytes for Electromechanical Actuators

Lyotropic ionic liquid crystal gels derived from polyimidazolium hydrogen sulfate for enhanced proton conductivity

Constructing liquid crystalline elastomer multi-fold gratings with side-on epoxy liquid crystalline monomers

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