Smart chiral liquid crystal elastomers: Design, properties and application

Smart Molecules, Journal Year: 2024, Volume and Issue: 2(1)

Published: Feb. 29, 2024

Abstract Smart chiral liquid crystal elastomers are a class of soft photonic crystals with periodic nanostructures. There two kinds structural colors: cholesteric one‐dimensional helical nanostructure and blue‐phase three‐dimensional nanostructure. The self‐assembled can be dynamically controlled under external stimulation, the reflected color adjusted throughout visible light range. Along development innovative material systems cutting‐edge manufacturing technologies, researchers have proposed diverse strategies to design synthesize thoroughly investigated their properties potential applications. Here, we provide systematic review progress in fabrication smart elastomers, focusing on via surface‐enforced alignment, bar coating, 3D printing, anisotropic deswelling methods as well self‐assembly without additional alignment. able respond quickly stimuli wide range applications areas such adaptive optics, color‐changing camouflage, robotics, information encryption. This concludes perspective opportunities challenges for future elastomers.

Language: Английский

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Functional Ionic Liquid Crystals

Langmuir, Journal Year: 2020, Volume and Issue: 36(40), P. 11702 - 11731

Published: Sept. 14, 2020

Ionic liquid crystals have emerged as a new class of functional soft materials in the last two decades, and they exhibit synergistic characteristics ionic liquids such macroscopic orientability, miscibility with various species, phase stability, nanostructural tunability, polar nanochannel formation. Owing to these characteristics, structures, properties, functions been hot topic chemistry, finding applications including host frameworks for guest binding, separation membranes, ion-/proton-conducting reaction media, optoelectronic materials. Although several excellent review articles published recently, mainly focused on fundamental aspects, specific properties crystals, while not yet discussed at one time. The aim this feature article is provide an overview comprehensive manner.

Language: Английский

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Functional liquid-crystalline polymers and supramolecular liquid crystals

Polymer Journal, Journal Year: 2017, Volume and Issue: 50(1), P. 149 - 166

Published: Sept. 27, 2017

Language: Английский

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Self‐Assembly of Giant Spherical Liquid‐Crystalline Complexes and Formation of Nanostructured Dynamic Gels that Exhibit Self‐Healing Properties

Angewandte Chemie International Edition, Journal Year: 2017, Volume and Issue: 56(45), P. 14085 - 14089

Published: Sept. 6, 2017

Supramolecular self-assembly of 24 forklike mesogenic ligands and 12 transition metal ions led to the formation giant spherical coordination complexes that exhibit liquid-crystalline (LC) phases. Self-healing LC supramolecular gels were also obtained through introduction these nanostructured into dynamic covalent networks formed by cross-linkers bifunctional polymers. The structures PdII with 72 rodlike moieties on periphery characterized NMR, diffusion-ordered NMR spectroscopy, mass spectrometry. These are stable lyotropic behavior, while show thermotropic properties. self-assembled can be tuned length moieties.

Language: Английский

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Gyroid and Other Ordered Morphologies in Single-Ion Conducting Polymers and Their Impact on Ion Conductivity

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 142(2), P. 857 - 866

Published: Dec. 6, 2019

Controlling the self-assembled nanoscale ionic aggregates in single-ion conducting polymers is a crucial step toward exceptional transport properties. We report series of precisely segmented polyethylene-like materials containing sulfonate groups (PES23) with Li+, Na+, Cs+, or NBu4+ counterions synthesized from step-growth polymerization. At room temperature, all are semicrystalline well-defined layers separated by 35-38 Å, depending on cation. In situ X-ray scattering measurements reveal that layered PES23Li, PES23Na, and PES23Cs transform, upon melting PE blocks, into Ia3d gyroid morphology. The gyroidal PES23Li PES23Na further evolve hexagonal symmetry as temperature increases. These order-to-order transitions aggregate morphologies were also confirmed oscillatory shear rheology. ion behavior these PES23 strongly dependent morphologies. Specifically, 3D interconnected morphology exhibits higher conductivity than isotropic This innovative versatile molecular design leads to unprecedented percolated provide continuous pathway for improved transport.

Language: Английский

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