Synthesis and Properties of Fluorinated Isothiocyanate Phenyl-Tolane Liquid Crystal Compounds

PENG Zeng-hui; YAO Li-shuang; MU Quan-quan; ZHAO Jing-li; LIU Yong-gang; LI Da-yu; YAN Don

doi:10.3788/YJYXS20132804.0479

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Synthesis and Properties of Fluorinated Isothiocyanate Phenyl-Tolane Liquid Crystal Compounds

Material Physics & Chemistry | 更新时间：2020-08-12

- Synthesis and Properties of Fluorinated Isothiocyanate Phenyl-Tolane Liquid Crystal Compounds
- Chinese Journal of Liquid Crystals and Displays Vol. 28, Issue 4, Pages: 479-483(2013)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春,130033
  2. 中国科学院光学系统先进制造技术重点实验室, 吉林长春 130033
  3. 长春职业技术学院,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20132804.0479
  CLC： O753.2
- Received：02 February 2013，
  
  Revised：08 April 2013，
  
  Published：15 August 2013
- 稿件说明：
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彭增辉, 姚丽双, 穆全全, 赵晶丽, 刘永刚, 李大禹, 闫冬梅. 氟代苯基二苯乙炔基异硫氰酸酯的合成与液晶性质研究[J]. 液晶与显示, 2013,28(4): 479-483

PENG Zeng-hui, YAO Li-shuang, MU Quan-quan, ZHAO Jing-li, LIU Yong-gang, LI Da-yu, YAN Dong-mei. Synthesis and Properties of Fluorinated Isothiocyanate Phenyl-Tolane Liquid Crystal Compounds[J]. , 2013,28(4): 479-483
彭增辉, 姚丽双, 穆全全, 赵晶丽, 刘永刚, 李大禹, 闫冬梅. 氟代苯基二苯乙炔基异硫氰酸酯的合成与液晶性质研究[J]. 液晶与显示, 2013,28(4): 479-483 DOI： 10.3788/YJYXS20132804.0479.

PENG Zeng-hui, YAO Li-shuang, MU Quan-quan, ZHAO Jing-li, LIU Yong-gang, LI Da-yu, YAN Dong-mei. Synthesis and Properties of Fluorinated Isothiocyanate Phenyl-Tolane Liquid Crystal Compounds[J]. , 2013,28(4): 479-483 DOI： 10.3788/YJYXS20132804.0479.

摘要

通过偶联法合成了6种氟代苯基二苯乙炔基异硫氰酸酯液晶化合物。这些液晶均具有较高的

值

约为0.40~0.54。差热分析结果显示

具有更多取代氟原子的液晶化合物具有相对更低的熔点。将这些高

液晶化合物溶于商品炔类液晶材料时

氟原子为1、2的液晶化合物显示出更低的黏度。当这些混合液晶材料用于具有固定调制量的光学器件时

2个取代氟原子的液晶化合物显示出了更好的响应性能。这些液晶化合物在液晶光学器件中将具有一定的应用潜力。

Abstract

Six kinds of LC materials with fluorinated isothiocyanate phenyl-tolane group were prepared via couple reaction. These LCs exhibit high birefringence

about 0.40~0.54. The DSC test results indicated that the melting point of LC compounds decreased with the atom number of fluorine increasing. When these LCs were mixed in the commercial alkyne LCs respectively

the LC compounds with 1 or 2 fluorine atoms exhibit low viscosity. When these mixed LC materials were used in optics device

the isothiocyanate phenyl-tolane LCs with 2 fluorine atoms have the best response performance. These LCs with high

and low rotational viscosity would have some application potential in LC optical device.

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references

高鸿锦,董友梅. 液晶与平板显示技术 [M].北京:北京邮电大学出版社,2007:10-25.[2] Cao Z, Xuan L, Hu L, et al. Effects of the space-bandwidth product on the liquid-crystal kinoform [J]. Optics Express, 2005, 13(14):5186-5191.[3] Gauza S, Wang H, Wen C, et al. High birefringence isothiocyanato tolane liquid crystals [J]. Jpn. J. Appl. Phys., 2004, 42: 3463-3466.[4] Hird M, Toyne K, Goodby J, et al. Synthesis, mesomorphic behaviour and optical anisotropy of some novel mate-rials for nematic mixtures of high birefringence [J]. J. Mater. Chem., 2004, 14:1731-1743.[5] Gauza S, Parish A, Wu S T, et al. Physical properties of laterally fluorinated isothiocyanato phenyl-tolane liquid crystals [J]. Liquid Crystals, 2008, 35(4): 483-448.[6] 杜晓华,许响生,傅幼锋,等. 非硫光气法合成一些难合成的芳基异硫氰酸酯 [J]. 农药,2004,43(2):78-79.[7] 彭增辉,张然,刘永刚,等. 双环NCS液晶的合成与性质研究 [J]. 液晶与显示, 2009,24(5):630-634.[8] Dunmur D, Fukuda A, Luckhurst G. Physical Properties of Liquid Crystals: Nematics[M].London: the Institution of Electrical Engineers, 2001: 515-517.[9] Jakeman E, Raynes E P. Electro-optic response times in liquid crystals [J]. Phys. Lett., 1972, A39: 69-70.

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Synthesis and Liquid Crystal Properties of Isothiocyanate Tolane Compounds

Related Author

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Related Institution

State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences

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