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Polar nematic liquid crystal formed from aromatic polyesters with head-tail character

机译：由具有头尾特征的芳族聚酯形成的极性向列液晶

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We describe a distinct polar nematic liquid crystal formed from the polar rod-like aromatic polyester which comprises 4-hydroxybenzoic acid (HBA) and 6-hydroxy-2-naphthoic acid (HNA) in a molar ratio of 73/27. The nemtic liquid crystal is biaxial and the polarity appears along both axes as determined by measurements of the second harmonic generation. The polar structure disappears when the molecular weight in polyester is decreased, showing that the large dipole moment of each chain is responsible for the polar ordering. The strong dipole-dipole interaction between polar rod-like molecules may be ascribed to the origin of the polarility.

机译：我们描述了由极性棒状芳族聚酯形成的独特极性向列液晶，所述极性棒状芳族聚酯包含4-羟基苯甲酸（HBA）和6-羟基-2-萘甲酸（HNA）的摩尔比为73/27。向列型液晶是双轴的，并且极性通过测量二次谐波的产生而沿两个轴出现。当聚酯中的分子量降低时，极性结构消失，表明每个链的大偶极矩是极性排序的原因。极性杆状分子之间的强偶极-偶极相互作用可归因于极性的起源。

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来源
《Liquid Crystals VIII》|2004年|P.190-200|共11页
会议地点 DenverCO(US)
作者
Masao Koike; Liu Yuqing; Hitoshi Tsuchiya; Tatsuya Imase; Masatoshi Tokita; Susumu Kawauchi; Hideo Takezoe; Junji Watanabe;
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作者单位

Department of Organic Polymeric Materials, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152, Japan;

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会议组织
原文格式 PDF
正文语种 eng
中图分类显示材料;类晶态;
关键词
nematic liquid crystal; aromatic polyester; polar structure; second harmonic generation; biaxiality;

机译：向列液晶;芳族聚酯;极性结构;二次谐波的产生;双轴性;

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专利

1. Unusual nematic liquid crystal with polar C-s symmetry formed from aromatic polyesters with head-tail character [J] . Koike M, Yen CC, Liu YQ, Macromolecules . 2007,第7期

机译：由具有首尾特征的芳族聚酯形成的具有极性C-s对称性的不寻常向列液晶
2. Molecular Modeling of a Polar Rod-Like Aromatic Polyester Forming Nematic Liquid Crystal/ Part 2/ Molecular Dynamics Simulation for Polar Association of Molecules [J] . Imase T., Kawauchi S. Molecular Crystals and Liquid Crystals Science and Technology, Section A. Molecular Crystals and Liquid Crystals . 2000,第0期

机译：形成向列型液晶的极性棒状芳香聚酯的分子模型/第二部分/分子极性缔合的分子动力学模拟
3. Molecular Modeling of a Polar Rod-Like Aromatic Polyester Forming Nematic Liquid Crystal/ Part 2/ Molecular Dynamics Simulation for Polar Association of Molecules [J] . Imase T., Kawauchi S. Molecular Crystals and Liquid Crystals Science and Technology, Section A. Molecular Crystals and Liquid Crystals . 2000,第0期

机译：形成向列型液晶的极性棒状芳香聚酯的分子模型/第二部分/分子极性缔合的分子动力学模拟
4. Polar nematic liquid crystal formed from aromatic polyesters with head-tail character [C] . Masao Koike, Liu Yuqing, Hitoshi Tsuchiya, Conference on Liquid Crystals . 2004

机译：极性向型液晶由带头尾部的芳族聚酯形成
5. In-situ ultrasonic compatibilization of binary blends of flexible chain polyesters and aromatic liquid crystalline polymers. [D] . Gunes, Kaan. 2009

机译：柔性链聚酯和芳族液晶聚合物的二元共混物的原位超声增容。
6. Polar Switching and Cybotactic Nematic Ordering in134-Thiadiazole-Based Short-Core Hockey Stick-Shaped FluorescentLiquid Crystals [O] . SandipKumar Saha, Golam Mohiuddin, Manoj Kumar Paul, 2019

机译：极点交换和同质向列顺序134-噻二唑基短核曲棍球棒形荧光灯液晶体
7. Studies on binary mixtures of nematic liquid crystals made of strongly polar molecules with identical cores and antagonistic orientation of permanent dipoles [O] . Dasari Venkata Sai, Tae Hoon Yoon, Surajit Dhara 2020

机译：具有相同芯的强极分子制成的向型液晶二元混合物的研究及永久偶极抗拮抗作用
8. Synthesis and Characterization of Aromatic Polyester and Polysiloxane ContainingBlock Copolymers: Multiphase Transparent Atomic Oxygen Resistant Damping Materials, Liquid Crystal Films, and Toughening Components of Sol/Gel Glasses [R] . McGrath, J. E. 1990

机译：含有嵌段共聚物的芳香族聚酯和聚硅氧烷的合成与表征：多相透明原子耐氧阻尼材料，液晶薄膜和溶胶/凝胶玻璃的增韧组分

Polar nematic liquid crystal formed from aromatic polyesters with head-tail character

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