4.7 Article

Achieving High Permittivity Paraelectric Behavior in Mesogen-Free Sulfonylated Chiral Polyethers with Smectic C Liquid Crystalline Self-Assembly

Related references

Note: Only part of the references are listed.
Article Polymer Science

Smectic C Self-Assembly in Mesogen-Free Liquid Crystalline Chiral Polyethers with Sulfonylated Methyl-Branched Side Chains

Caleb A. Bohannon et al.

Summary: In order to achieve advanced electrical applications for ferroelectric liquid crystalline polymers, researchers designed and synthesized a new type of polyether with sulfonylated methyl-branched alkyl side chains. They found that a crystalline structure is observed when both the main chain and the side chains have double chirality, while a liquid crystalline smectic C phase is obtained when either the backbone or the side chains have single chirality. However, the electric displacement-electric field study did not show typical ferroelectric switching, likely due to the strong dipole-dipole interactions among neighboring sulfonyl groups hindering the ferroelectric switching.

MACROMOLECULAR RAPID COMMUNICATIONS (2023)

Review Chemistry, Multidisciplinary

Liquid Crystals: Versatile Self-Organized Smart Soft Materials

Hari Krishna Bisoyi et al.

Summary: Smart soft materials play a critical role in advanced devices and digitally augmented technologies. Liquid crystals, with their responsive and adaptive attributes, have promising potential as smart soft materials. In the 20th century, liquid crystals revolutionized the information display industry, and in the 21st century, they have demonstrated numerous beyond-display applications.

CHEMICAL REVIEWS (2022)

Article Chemistry, Physical

Anisotropic epitaxial stabilization of a low-symmetry ferroelectric with enhanced electromechanical response

Oliver Paull et al.

Summary: Epitaxial strain and orientation engineering have been combined to create a low-symmetry phase of BiFeO3 with enhanced piezoelectric response, which undergoes a transition to the tetragonal-like polymorph under electric field. This results in an enhanced piezoelectric response throughout the film and associated field-induced reversible strains. This approach offers a way to improve the functionalities of thin-film piezoelectrics, with potential applications in other functional oxides.

NATURE MATERIALS (2022)

Article Chemistry, Physical

Development of emergent ferroelectric nematic liquid crystals with highly fluorinated and rigid mesogens

Yaohao Song et al.

Summary: The emerging ferroelectric nematic liquid crystals have attracted broad interests for their unique material properties and the challenge of limited material choice. This work presents a design of novel ferroelectric nematic materials and confirms their characteristics through rigorous experiments.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2022)

Article Chemistry, Multidisciplinary

How Far Can We Push the Rigid Oligomers/Polymers toward Ferroelectric Nematic Liquid Crystals?

Jinxing Li et al.

Summary: The emerging ferroelectric nematic (N-F) liquid crystal is a novel 3D-ordered liquid exhibiting macroscopic electric polarization. Through precision synthesis of aromatic rod-shaped mesogens, the mu value of the N-F materials can be increased beyond 30 Debye, and the ferroelectric packing of oligomer/polymer rods offers new insights in liquid crystal polymer materials.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Multidisciplinary Sciences

Enhanced piezoelectricity from highly polarizable oriented amorphous fractions in biaxially oriented poly(vinylidene fluoride) with pure β crystals

Yanfei Huang et al.

Summary: Researchers have successfully prepared a highly piezoelectric polymer with a higher piezoelectric coefficient than existing piezoelectric polymers, based on poled biaxially oriented poly(vinylidene fluoride) with a pure beta phase formed by orientation.

NATURE COMMUNICATIONS (2021)

Article Multidisciplinary Sciences

Development of ferroelectric nematic fluids with giant-ε dielectricity and nonlinear optical properties

Jinxing Li et al.

Summary: Researchers have developed superhigh-epsilon fluid materials with high dielectric permittivity, strong second harmonic generation, and macroscopic spontaneous polar ordering through rational molecular design and machine learning analyses. They confirmed that the polar structures are identical for all the synthesized materials and successfully extended this strategy to high-molecular weight systems, creating polar soft matters with spontaneous symmetry breaking.

SCIENCE ADVANCES (2021)

Article Chemistry, Multidisciplinary

Ordered hexagonal columnar liquid crystalline self-assembly of mesogen-free sulfonylated side-chain chiral polyethers and their high dielectric property

Man-Hin Kwok et al.

Summary: A series of mesogen-free isotactic polyethers with sulfonylated side chains were designed to achieve large spontaneous polarization for ferroelectric liquid crystalline polymers, with a helical chain conformation with tilted side chains being achieved through the implementation of a methyl branch in the alkyl side chains. High-field dielectric properties were studied, but no ferroelectric behavior was observed due to strong dipole-dipole interactions among neighboring sulfonyl groups.

GIANT (2021)

Article Materials Science, Multidisciplinary

Giant spontaneous polarization for enhanced ferroelectric properties of biaxially oriented poly(vinylidene fluoride) by mobile oriented amorphous fractions

Guanchun Rui et al.

Summary: This study reported an unprecedented spontaneous polarization for a highly poled biaxially oriented PVDF film, reaching a value higher than previously observed. The presence of oriented amorphous fractions (OAFs) linking different phases was found to significantly contribute to the high polarization observed.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

Review Polymer Science

Intrinsic polymer dielectrics for high energy density and low loss electric energy storage

Junji Wei et al.

PROGRESS IN POLYMER SCIENCE (2020)

Article Engineering, Multidisciplinary

Reducing dielectric loss by nanoconfined impurity ion transport in multilayer films under low electric fields

Xinyue Chen et al.

COMPOSITES PART B-ENGINEERING (2020)

Article Multidisciplinary Sciences

First -principles experimental demonstration of ferroelectricity in a thermotropic nematic liquid crystal: Polar domains and striking electro-optics

Xi Chen et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2020)

Review Materials Science, Multidisciplinary

Stimuli directed alignment of self-organized one-dimensional semiconducting columnar liquid crystal nanostructures for organic electronics

Hari Krishna Bisoyi et al.

PROGRESS IN MATERIALS SCIENCE (2019)

Article Multidisciplinary Sciences

Solution-processed transparent ferroelectric nylon thin films

Saleem Anwar et al.

SCIENCE ADVANCES (2019)

Review Chemistry, Multidisciplinary

Stimuli-Driven Control of the Helical Axis of Self-Organized Soft Helical Superstructures

Hari Krishna Bisoyi et al.

ADVANCED MATERIALS (2018)

Article Chemistry, Multidisciplinary

A Fluid Liquid-Crystal Material with Highly Polar Order

Hiroya Nishikawa et al.

ADVANCED MATERIALS (2017)

Review Chemistry, Multidisciplinary

Supramolecular ferroelectrics

Alok S. Tayi et al.

NATURE CHEMISTRY (2015)

Review Chemistry, Multidisciplinary

Liquid Crystalline Elastomers as Actuators and Sensors

Christian Ohm et al.

ADVANCED MATERIALS (2010)

Article Polymer Science

Polysiloxanes containing alkyl side groups: Synthesis and mesomorphic behavior

Byoung Gak Kim et al.

MACROMOLECULAR RESEARCH (2008)

Article Chemistry, Multidisciplinary

Photomechanical effects of ferroelectric liquid-crystalline elastomers containing azobenzene chromophores

Yanlei Yu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2007)

Article Polymer Science

Synthesis and liquid crystalline properties of poly(ethylene oxide) brushes with amphiphilic side groups

JU Kim et al.

MACROMOLECULAR CHEMISTRY AND PHYSICS (2005)

Article Multidisciplinary Sciences

Giant lateral electrostriction in ferroelectric liquid-crystalline elastomers

W Lehmann et al.

NATURE (2001)