Properties of four ring chain liquid crystalline compounds with difluoromethyleneoxy linkage group

LI Juan-li; LI Jian; CHE Zhao-yi; GAN Ning; AN Zhong-wei; YANG Xiao-zhe; CHEN Tao

doi:10.3788/YJYXS20142903.0311

您当前的位置：

首页 >

文章列表页 >

Properties of four ring chain liquid crystalline compounds with difluoromethyleneoxy linkage group

Table of contents | 更新时间：2020-08-12

- Properties of four ring chain liquid crystalline compounds with difluoromethyleneoxy linkage group
- Chinese Journal of Liquid Crystals and Displays Vol. 29, Issue 3, Pages: 311-316(2014)
- 作者机构：
  
  西安近代化学研究所光电材料事业部, 陕西西安 710065
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20142903.0311
  CLC： O753+.2
- Received：04 September 2013，
  
  Revised：30 September 2013，
  
  Published Online：01 November 2013，
  
  Published：25 April 2014
- 稿件说明：
移动端阅览
李娟利, 李建, 车昭毅, 甘宁, 安忠维, 杨晓哲, 陈涛. 四环二氟甲醚桥键液晶化合物性能研究[J]. 液晶与显示, 2014,29(3): 311-316

LI Juan-li, LI Jian, CHE Zhao-yi, GAN Ning, AN Zhong-wei, YANG Xiao-zhe, CHEN Tao. Properties of four ring chain liquid crystalline compounds with difluoromethyleneoxy linkage group[J]. , 2014,29(3): 311-316
李娟利, 李建, 车昭毅, 甘宁, 安忠维, 杨晓哲, 陈涛. 四环二氟甲醚桥键液晶化合物性能研究[J]. 液晶与显示, 2014,29(3): 311-316 DOI： 10.3788/YJYXS20142903.0311.

LI Juan-li, LI Jian, CHE Zhao-yi, GAN Ning, AN Zhong-wei, YANG Xiao-zhe, CHEN Tao. Properties of four ring chain liquid crystalline compounds with difluoromethyleneoxy linkage group[J]. , 2014,29(3): 311-316 DOI： 10.3788/YJYXS20142903.0311.

摘要

二氟甲醚桥键类液晶是目前广泛使用的一类液晶化合物，但是其相关相变行为和物理参数很少有系统地报道。本文采用DSC、POM测试，对系列1和2共计7种含环己烷的四环骨架二氟甲醚桥键液晶单体的介晶性进行了研究，并考察了不同单体对混合液晶性能的影响规律，采用加法原理对各系列单体的物理性能参数进行了外推。结果表明，与系列2化合物相比，系列1单体具有更高的清亮点和更宽的向列相温度范围。系列2单体由于氟原子数的增加，介电各向异性值增大。系列1单体可显著改善混合液晶的低温相溶性，有利于拓宽混合液晶的使用温度。

Abstract

Liquid crystalline compounds with difluoromethyleneoxy linkage group are widely used in liquid crystal mixtures.However

their phase behavior and physical properties have not been reported systematically.The mesomorphic properties of two series of compounds 1 and 2 with cyclohexyl group were thoroughly studied by using differential scanning calorimetry(DSC) and polarizing optical microscopy(POM).The effect of all the compounds on the mixtures were systematically investigated and their physical parameters were extropolated by using addition principle.The results show that compounds 1 have higher clearing point and wider nematic phase temperature range than that of compounds 2.Due to the increase of a fluorine atom on the skeleton

compounds 2 have higher dielectric anisotropy than that of compounds 1.Compounds 1 can significantly improve low temperature miscibility and broaden the mixed liquid crystal temperature range.

关键词

Keywords

references

王新久.液晶光学和液晶显示 [M].北京: 科学出版社,2006. Wang X J.Liquid Crystal Optics and Liquid Crystal Display [M].Beijing: Science Press, 2006. (in Chinese)[2] Seunghee L, Surjya S B, Heui S J, et al.Devices and materials for high-performance mobile liquid crystal displays [J].J. Mater. Chem.,2012, 22(1): 11893-11903.[3] 李娟利,李建,杜渭松,等. 低阈值TFT液晶材料物理性能研究[J]. 液晶与显示, 2010,25(2): 166-171. Li J L, Li J, Du W S, et al.Study on physical properties of TFT liquid crystals having low threshold voltage [J].Chinese Journal of Liquid Crystals and Displays,2010,25(2): 166-171. (in Chinese)[4] 张兴,郑成武,李宁,等. 液晶材料与３D显示[J]. 液晶与显示, 2012,27(4): 448-455. Zhang X, Zheng C W, Li N, et al.Liquid crystal materials and 3D display [J].Chinese Journal of Liquid Crystals and Displays,2012,27(4): 448-455. (in Chinese)[5] Matsui S, Kondo T,Sago K. Synthesis and properties of novel liquid crystalline compounds having a difluoromethy-leneoxy moiety as a linkage group [J].Mol. Cryst. Liq. Cryst. ,2004, 411(1): 127-137.[6] Hiraoka T, Fujita A. Novel liquid crystalline four ring chain difluoromethyleneoxy compounds for quicker response LC mixtures [J].Mol. Cryst. Liq. Cryst.,2009,509(1): 89-95.[7] Tanaka H, Fujita A. Nematic liquid crystal compounds with five-ring framework [J].Mol. Cryst. Liq. Cryst. ,2009, 509(1): 118-133.[8] 田中裕之. 具有CF2O结合基的五环液晶化合物、液晶组成物以及液晶显示元件,中国: CN200880006097.X[P].2010-01-20. Tian Z Y Z. Liquid crystalline five ring china difluoromethyleneoxy compounds, LC mixtures and LCD, China:CN20080006097.X[P].2010-01-20.(in Chinese)[9] Tomovuki K, Kouki S, Shuichib M, et al.Difluoromethyl ethera derivative and process for producing the same, US: 2002120168A1[P]. 2002-08-29.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Physical Properties of TFT Liquid Crystals with Low Threshold Voltage

Electrical properties of liquid crystal materials with temperature

Microwave dielectric properties of fluorine substituted phenylacetylene liquid crystal compounds

5, 6-Difluoro-benzofuran:A new core structure for the design of liquid crystal compound

Dielectric properties of fluorine-containing tricyclic NCS liquid crystal materials

Related Author

LI Jian

DU Wei-song

LUO Wei

GAN Ning

DENG Deng

Jiao ZHANG

Nan WU

Yi-yang HUANG

Related Institution

Optical and Electrical Material Department,Xian Modern Chemistry Research Institute, Xian 710065,China,E-mail: lijl208@sohu.

Hebei Provincial Research Center of FPD Engineering Technology

Hebei Jiya Electronics Co. Ltd.

School of Materials, Science and Engineering, Hebei University of Technology

School of Sciences, Hebei University of Technology

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China 130033 Postal code：130033
Tel：0431-86176059 Email：yjxs@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰