Applications of Biomaterials to Liquid Crystals

Iwabata, Kazuki; Sugai, Urara; Seki, Yasutaka; Furue, Hirokazu; Sakaguchi, Kengo

doi:10.3390/molecules18044703

Cited by 39 publications

(32 citation statements)

References 99 publications

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“…The slope of the stress‐strain curve, in other words, the stress / strain ratio gives the value of the Young's modulus. The larger the Young modulus, the more resistant the material is to the applied force . The stress vs. strain data in Figure shows that PHBHHx/DBDMA composite has higher ultimate tensile strength than that of pure PHBHHx film.…”

Section: Resultsmentioning

confidence: 99%

“…The liquid crystal term signifies a state of matter that has the properties of the crystalline solid and the amorphous liquid which means a liquid crystal shows the mobility of a liquid, as well as the order of a crystalline structure . Liquid crystal molecules, possess anisotropic electric and magnetic susceptibilities, and the orientation of liquid crystals can be changed by external factors, such as magnetic and electric fields . Their changeable molecular order as a response to the signals from the external environments, such as electric field and temperature provide the opportunity of applications at various technical fields like display technologies and optical devices.…”

Section: Introductionmentioning

confidence: 99%

“…Solidification of liquid crystals with the help of polymers or physical gelation improves the performance of both LC and the polymeric material . For example; the blood compatibility of silicon rubber which can lead to thrombus when contacts with blood was improved by surface modification of a kind of liquid crystal .…”

Section: Introductionmentioning

confidence: 99%

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A Novel Imine Based‐Liquid Crystal / PHBHHx Composite: Synthesis and Characterization

et al. 2020

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A new imine based chiral calamitic compound carrying a (S)-3,7-Dimethyloctyloxy group at one of terminal was synthesized and characterized by 1 H-NMR, 13 C-NMR and FT-IR spectroscopy. 4-Dodecyloxybenzylidene-4'-(S)-(3,7-dimethyloctyloxy) aniline (DBDMA) exhibits an enantiotropic chiral smectic tilted phase (SmC*) at a low temperature range. The mesomorphic properties of new liquid crystal were determined by Differential Scanning Calorimetry (DSC) and Polarised Optical Microscopy (POM). A new composite membrane was also prepared from DBDMA and Poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) via solvent evaporation technique. The surface morphology as well as the mechanical behaviour of PHBHHx/ DBDMA composite membrane were investigated by Scanning Electron Microscopy (SEM) and Dynamic Mechanical Analysis (DMA). Additionally, cell compatibility tests of the PHBHHx/ DBDMA composite were performed by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method. The surface of PHBHHx/DBDMA composite membrane exhibited a homogenous porosity. The introduction of DBDMA into the polymer media improves the cell viability and mechanical strength.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Novel Imine Based‐Liquid Crystal / PHBHHx Composite: Synthesis and Characterization

et al. 2020

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“…However, the variety of LCs is large. Ferroelectric LCs [24] or lyotropic chromonic LCs for biological sensing application [25,26], are only a few examples of LC materials that might be used in combination with LPFGs to enhance their tuning properties. It could be also interesting to fabricate a LPFG based on the fiber made of high-index glass.…”

Section: Resultsmentioning

confidence: 99%

Improving the electric field sensing capabilities of the long-period fiber grating coated with a liquid crystal layer

et al. 2016

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The hybrid liquid crystal long-period fiber grating structure presented here uses the 1702 liquid crystal as a thin layer on the bare long-period fiber grating. To achieve the highest long-period fiber grating sensitivity to the liquid crystal layer presence, a UV-induced host grating, with a relatively short period of 226.8 μm, was chosen. This design makes it possible to couple light from the propagating core mode to a cladding mode at a wavelength near the phase-matching turning point. This phenomenon is exploited here for the first time to measure the thermal and electric field responses of the liquid crystal long-period fiber grating structure. All experimental results achieved in this work are supported by theoretical analysis.

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“…Kazuki Iwahata et al [6] studied applications of biomaterials to chemically synthesized thermotropic liquid crystals. Such study covers the improvement of the performance of liquid crystal displays using LC physical gels consisting of a liquid crystal admixed with amino acid based gelator and some other functionalization like electro optical measurements, electronic device industry and refining of industrial products.…”

Section: Introductionmentioning

confidence: 99%

Dependence of Molecular Structure on Mesomorphic Behavior with Special Reference to Central Bridge

Patel¹,

Doshi

2015

Molecular Crystals and Liquid Crystals

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A novel homologous series of liquid crystalline 4-(4 -n-alkoxy cinnamoyloxy)-4 -methoxy benzyl cinnamates was synthesized and studied with a view to understand and establish the effects of molecular structure on liquid crystal behavior. The series consists of eleven members of the series. None of the homologue derivatives are either nonliquid crystal or smectogenic, i.e. all the eleven members of the novel homologous series are enantiotropcially nematogenic only. Transition and melting temperatures as well as textures of the nematic mesophase were determined on an optical polarizing microscope equipped with a heating stage. The transition curves of the phase diagram show phase behavior in a normal expected manner. An odd-even effect is observed for the nematic-isotropic transition curve. The textures of the nematic mesophase are threaded or Schlieren as determined a by miscibility method. Analytical and spectral data confirm the molecular structures of the homologues. The average thermal stability for nematic is 213.8 • C. The isotropic temperatures vary between 190 • C and 240 • C. The nematogenic mesophase length varies from 17 • C to 102 • C. Thus, the novel homologous series is entirely nematogenic without the exhibition of smectogenic character. The liquid crystal (LC) properties of the present novel series are compared with structurally similar other known homologous series.

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Applications of Biomaterials to Liquid Crystals

Cited by 39 publications

References 99 publications

A Novel Imine Based‐Liquid Crystal / PHBHHx Composite: Synthesis and Characterization

A Novel Imine Based‐Liquid Crystal / PHBHHx Composite: Synthesis and Characterization

Improving the electric field sensing capabilities of the long-period fiber grating coated with a liquid crystal layer

Dependence of Molecular Structure on Mesomorphic Behavior with Special Reference to Central Bridge

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