Synthesis and Low-Temperature Properties of Lateral Difluoro-Diphenyltolane Compounds

SUN Liang; ZHANG Zhi-yong; YOU Hong-jun; DAI Zhi-qun; WEI Ben-mei; XUAN Li; PENG Zeng-hui

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Synthesis and Low-Temperature Properties of Lateral Difluoro-Diphenyltolane Compounds

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

- Synthesis and Low-Temperature Properties of Lateral Difluoro-Diphenyltolane Compounds
- Chinese Journal of Liquid Crystals and Displays Vol. 25, Issue 6, Pages: 784-791(2010)
- 作者机构：
  
  1. 武汉工业学院化学与环境工程系,湖北武汉,430023
  2. 中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
- 基金信息：
- DOI：
  CLC： O753+.2
- Received：04 April 2010，
  
  Revised：22 April 2010，
  
  Published Online：20 December 2010，
  
  Published：20 December 2010
- 稿件说明：
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孙亮, 张智勇, 游红军, 戴志群, 未本美, 宣丽, 彭增辉. 含氟联苯乙炔液晶化合物的合成及其低温性能[J]. 液晶与显示, 2010,25(6): 784-791

SUN Liang, ZHANG Zhi-yong, YOU Hong-jun, DAI Zhi-qun, WEI Ben-mei, XUAN Li, PENG Zeng-hui. Synthesis and Low-Temperature Properties of Lateral Difluoro-Diphenyltolane Compounds[J]. , 2010,25(6): 784-791
孙亮, 张智勇, 游红军, 戴志群, 未本美, 宣丽, 彭增辉. 含氟联苯乙炔液晶化合物的合成及其低温性能[J]. 液晶与显示, 2010,25(6): 784-791 DOI：

SUN Liang, ZHANG Zhi-yong, YOU Hong-jun, DAI Zhi-qun, WEI Ben-mei, XUAN Li, PENG Zeng-hui. Synthesis and Low-Temperature Properties of Lateral Difluoro-Diphenyltolane Compounds[J]. , 2010,25(6): 784-791 DOI：

摘要

合成了高双折射率、低黏度的含氟联苯乙炔类液晶系列化合物(Ⅵ)

这些化合物经过IR、

H-NMR、

C-NMR、

F-NMR、MS鉴定确定分子结构正确

其液晶相态经过DSC和POM测定

并测试分析了它们的折光率和在不同温度下的黏度行为。实验结果表明

该类液晶化合物的双折射率达到0.32以上;与其他结构相当的炔类化合物相比

具有较低的低温黏度以及较小的温度依赖性。这些特性有利于降低液晶材料的黏度并提高响应速度。

Abstract

The lateral difluoro-diphenyltolane compounds (Ⅵ) with low viscosity

high birefringence were synthesized. Their structures were determined by IR

H-NMR

C-NMR

F-NMR and MS. The transition temperature of liquid crystal phase and phase states were measured by DSC and POM. Their birefringence and viscosities at different temperature were also tested and analyzed. Experimental results show that the compounds synthesized exhibit high birefringence (

0.32)

have lower viscosities and smaller temperature dependence at low temperature

comparing with the other relative structure of tolane compounds. These compounds are particularly attractive for reducing the viscosity of liquid crystal materials and achieving fast response times in LCD.

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Keywords

references

Gu D F, Winker B, Wen B, et al. Calibration of a spatial light modulator containing dual frequency liquid crystal //Advanced Wavefront Control: Methods, Devices, and Applications Ⅲ, Proceedings of SPIE,San Diego,USA:SPIE, 2005,5894:58940J(10).[2] 李辉, 杜渭松, 李建.显示液晶用手性添加剂材料进展 [J]. 液晶与显示, 2009, 24(1):26-33.[3] Dabrowski D, Dziazuszek J, Ziolek A, et al. Low viscosity, high birefringence liquid crystalline compounds and mixtures [J].Opto-Electronics Review, 2007, 15(1):47-51.[4] 何军,张然, 鲁兴海,等.快速高双折射率向列相液晶的分子设计与模拟计算 [J]. 液晶与显示, 2009,24(1):15-21.[5] Sebastian G, Wu D F, Wu S T, et al. High birefringence and low viscosity LC mixtures //Digest of Technical Papers - SID International Symposium,US:SID, 2003:1054-1057.[6] 张然,彭增辉,刘永刚,等.高n低粘度液晶的合成及性能研究 [J]. 液晶与显示, 2009,24(6):789-793.[7] 王刚,张智勇,张开诚,等.氯化铜催化偶联合成4-烷基联苯 [J]. 有机化学, 2008,28(3):538-541.[8] 未本美,张智勇,王刚,等.4-烷基-4'-氰基联苯的合成新方法 [J]. 化学世界, 2008,(3):169-171.[9] 李娟利, 李建, 杜渭松,等.含氟三环类液晶单体的介晶性研究 [J]. 液晶与显示, 2009, 24(1):9-14.

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