Synthesis and ferroelectric properties of chiral swallow-tailed liquid crystals derived from (L)-lactic acid

Wu, S.‐L.; Lin, C.-Y.

doi:10.1080/0267829031000089898

Cited by 22 publications

(3 citation statements)

References 16 publications

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“…For these compounds a linear P s (h s ) relationship does not hold. Similar behaviour has been observed for materials based on lactic acid and having different chemical structures [13,16,[19][20][21][22]. In the case of lactic acid derivatives, the competition between different conformers can be considered.…”

Section: Spontaneous Quantitiessupporting

confidence: 59%

New ferroelectric liquid crystalline materials containing one and two lactate groups attached to the molecular core

Garić¹,

Bubnov

Novotná

et al. 2005

Liquid Crystals

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Several new liquid crystalline materials containing one, two or three chiral centres and having one or two lactate groups in the molecular core have been synthesized. Most of the materials show the blue phase, chiral nematic phase, paraelectric smectic A phase and orthogonal hexatic smectic B phase; some possess the ferroelectric SmC* phase. A study of the mesomorphic properties has been performed using differential scanning calorimetry, optical microscopy and X-ray diffraction. The thickness of the smectic layers and the value of the average distance between the long axes of neighbouring molecules were determined. In the SmC* phase, the temperature dependence of spontaneous polarization, spontaneous tilt angle and helical pitch was measured. The influence of the number of lactate groups on mesogenic behaviour has been established.

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Section: Spontaneous Quantitiessupporting

confidence: 59%

New ferroelectric liquid crystalline materials containing one and two lactate groups attached to the molecular core

Garić¹,

Bubnov

Novotná

et al. 2005

Liquid Crystals

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show abstract

“…In the past 20 years, chiral liquid crystalline (LC) materials derived from the lactic acid, which form a broad variety of various smectic phases, attracts a considerable attention [1][2][3][4][5][6][7][8][9][10]. There are four main advantages of the lactic acid derivatives as a sub-class of chiral LCs that makes them attractive with respect to other materials, i.e.…”

Section: Introductionmentioning

confidence: 99%

Effect of alkyl chains length on properties of ferroelectric liquid crystals with the keto group attached to the molecule core

et al. 2012

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“…Hexyl D-lactate was synthesized according to the literature [46]. 4′-Hydroxybiphenyl- University" and fish picture were prepared by being printed on the surface of the PET films using the printer HP LaserJet P1007 purchased from China Hewlett-Packard Co., Ltd (China).…”

Section: Methodsmentioning

confidence: 99%

Colorful patterned polyacrylate films prepared using cholesteric liquid-crystalline mixtures with a smectic order

Wang

Zhao

et al. 2023

Liquid Crystals

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Polymer-stabilized cholesteric liquid crystal (PSCLC) films with selective circularly polarized light reflection attracted much attention for their applications as polarizers, energy-saving windows and for displays.Herein, CLC mixtures were prepared using a nematic LC LC242 and a chiral compound S-6 with enantiotropic SmA and SmC* phases, which exhibited a cholesteric phase with a smectic order. After photopolymerization, the PSCLC films with fingerprint structure at the surfaces and supramolecular helical structure inside were obtained. Due to the existence of short-range smectic order in the cholesteric structure, the Bragg reflection bands were broadened.For a CLC mixture, with increasing temperature, the short-range smectic order was suppressed, and the selective Bragg reflection band shifted to the short wavelength. Based on this thermochromic behavior, colorful PSCLC patterns and gratings were prepared, which were able to be applied in decoration and anti-counterfeiting. Since the PSCLC films can be obtained within several seconds under air, large-area films can be prepared on coating lines in lowcost.

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Synthesis and ferroelectric properties of chiral swallow-tailed liquid crystals derived from (L)-lactic acid

Cited by 22 publications

References 16 publications

New ferroelectric liquid crystalline materials containing one and two lactate groups attached to the molecular core

New ferroelectric liquid crystalline materials containing one and two lactate groups attached to the molecular core

Effect of alkyl chains length on properties of ferroelectric liquid crystals with the keto group attached to the molecule core

Colorful patterned polyacrylate films prepared using cholesteric liquid-crystalline mixtures with a smectic order

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