Mesomorphism of Fluorine Substituted Liquid Crystals Containing Three Rings

LI Juan-li; LI Jian; DU Wei-song; DENG Deng; GAN Ning

doi:null

您当前的位置：

首页 >

文章列表页 >

Mesomorphism of Fluorine Substituted Liquid Crystals Containing Three Rings

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

- Mesomorphism of Fluorine Substituted Liquid Crystals Containing Three Rings
- Chinese Journal of Liquid Crystals and Displays Vol. 24, Issue 1, Pages: 9-14(2009)
- 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,E-mail:lijl2008@sohu.com
- 作者简介：
- 基金信息：
- DOI：
  CLC： O753+.2
- Received：04 August 2008，
  
  Revised：02 January 1900，
  
  Published Online：20 February 2009，
  
  Published：20 February 2009
- 稿件说明：
移动端阅览
李娟利;李建;杜渭松;邓登;甘宁. 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

LI Juan-li;LI Jian;DU Wei-song;DENG Deng;GAN Ning. Mesomorphism of Fluorine Substituted Liquid Crystals Containing Three Rings[J]. 液晶与显示, 2009,24(1): 9-14
李娟利;李建;杜渭松;邓登;甘宁. 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 DOI：

LI Juan-li;LI Jian;DU Wei-song;DENG Deng;GAN Ning. Mesomorphism of Fluorine Substituted Liquid Crystals Containing Three Rings[J]. 液晶与显示, 2009,24(1): 9-14 DOI：

摘要

利用差示扫描量热仪(DSC)、显微热分析仪和偏光显微镜(POM)对CCP和CPP 两个系列液晶材料中含氟三环类液晶单体的介晶性进行了研究。结果表明

除CPP系列中的2CPPF

和4CPPF

外

其余所有化合物均有介晶性

在液晶态可观察到部分单体的近晶相和除2CPPF

和4CPPF

外所有单体的向列相的典型织构。探讨了烷基链碳原子数、环骨架结构以及氟原子取代数目对2个系列单体相变温度的影响规律。

Abstract

The mesomorphic properties of two series of fluorine substituted liquid crystals containing three rings were systematically characterized to investigate their phase transition behavior using differential scanning calorimetry(DSC)

microscopy heat analysis and polarizing optical microscopy(POM). The results show that all the compounds except 2CPPF

and 4CPPF

possess mesomorphism. Typical textures of smectic and nematic phase were observed. The influence of terminal alkyl

core structure and the number of fluorine substituents on the temperature of phase transition was discussed.

关键词

Keywords

references

. 张兴,唐洪,杨增家.二氟甲氧基苯酚酯类液晶的合成 [J]. 液晶与显示 ,2008,23(4):409-411.

. Sawada S,Yamamoto H,Kubo Y,et al.3,4,5-三氟苯基液晶材料的物理特性 [J]. 液晶通讯 , 1993,1(3):1-7.

. Goto Y,Ogawa W,Sugimori S,et al.Cyclohexane derivative.Japan:0194879 .1986-09-17.

. Chanlkm M,Gray G W,Laceyd,et al.Synthesis and liquid crystal behavior of further 4,4"-disubstituted-2'-fluoro-1,1':4',1″-terphenyls [J].Mol Cryst Liq Cryst,1988,158B:209-240.

. Gray G W,Hird M,Lacey D.The synthesis and transition temperature of some 4,4″-dialkyl-and 4,4″-alkoxyalkyl-1,1':4',1″-terphenyls with 2,3-or 2',3'-difluoro substituents and of their biphenyl analogues [J].J. Chem. Soc. Perkin Trans Ⅱ,1989,12:2041-2053.

. Michael H. Fluorinated liquid crystals-properties and applications [J].Chem. Soc. Rev., 2007,(36):2070-2095.

. Goto Y,Toga W,Sugmort S.Fluorinated liquid crystals for active matrix displays [J].Mol. Cryst. Liquid Cryst., 1991,209:1-7.

. Kirsch P,Bremer M.Nematic liquid crystals for active matrix display:molecular design and synthesis [J].Angew Chem. Int. Ed,2000,39:4216-4235.

. Gray G W,McDonnell D G. Synthesis and liqurd crystal properties of chiral alkyl-cyano-biphenyls (and-p-terphenyls) and of some related chiral compounds derived from diphenyl [J]. Mol. Cryst. Liq. Cryst.,1976,37(1):189-211.

. Eidenschink R,Erdmann D, Krause J, et al. The synthesis of 4,4-(biaalkyl-trans-cyclohexyl) biphenyl [J]. Angew Chem. Inter. Ed(Eng1),1977,16(2):100-107.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Photoalignment guided order evolution of liquid crystals

Transport behavior of liquid droplets based on functional liquid crystal surfaces

Generation of vector beam array using toric focal conic superstructures of smectic liquid crystals

Related Author

LUO Daoxing

WU Jinbing

GUO Zhenghao

HU Wei

DOU Yun-jie

WANG Ze-yu

WEI Yang

MA Ling-ling

Related Institution

College of Engineering and Applied Sciences， Nanjing University

National Laboratory of Solid State Microstructures， College of Engineering and Applied Sciences， Nanjing University

Information Engineering Institute， Guangzhou Railway Polytechnic

College of Material Science and Engineering， University of Science and Technology Beijing

School of Materials Science and Engineering， Peking University

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