乙烷桥键类四环液晶单体的介晶性研究

陈然; 安忠维; 陈新兵; 陈沛

doi:10.3788/YJYXS20142905.0649

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乙烷桥键类四环液晶单体的介晶性研究

材料物理和化学 | 更新时间：2020-08-12

- 乙烷桥键类四环液晶单体的介晶性研究
- Mesomorphism of four ring liquid crystal with ethylene-bridge
- 液晶与显示 2014年29卷第5期页码：649-654
- 作者机构：
  
  1. 陕西师范大学材料科学与工程学院应用表面与胶体化学教育部重点实验室,陕西西安,710119
  2. 西安近代化学研究所,陕西西安,710065
- 作者简介：
- 基金信息：
  
  陕西省自然科学基金（No.2012JM2002）();陕西省科技攻关项目（No.2012K08-09）()
- DOI：10.3788/YJYXS20142905.0649
  中图分类号： O625
- 收稿日期：2014-05-12，
  
  修回日期：2014-06-04，
  
  纸质出版日期：2014-10-05
- 稿件说明：
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陈然, 安忠维, 陈新兵, 陈沛. 乙烷桥键类四环液晶单体的介晶性研究[J]. 液晶与显示, 2014,29(5): 649-654

CHEN Ran, AN Zhong-wei, CHEN Xin-bing, CHEN Pei. Mesomorphism of four ring liquid crystal with ethylene-bridge[J]. , 2014,29(5): 649-654
陈然, 安忠维, 陈新兵, 陈沛. 乙烷桥键类四环液晶单体的介晶性研究[J]. 液晶与显示, 2014,29(5): 649-654 DOI： 10.3788/YJYXS20142905.0649.

CHEN Ran, AN Zhong-wei, CHEN Xin-bing, CHEN Pei. Mesomorphism of four ring liquid crystal with ethylene-bridge[J]. , 2014,29(5): 649-654 DOI： 10.3788/YJYXS20142905.0649.

摘要

乙烷桥键类四环液晶早已得到广泛的应用，但是其介晶性能很少有系统的报道。本文采用DSC、POM测试，对新合成的两种含双乙烷桥键侧氟类和二苯乙炔类四环液晶单体（EA3E和EA5E）的介晶性进行了研究，并探讨了已有的乙烷桥键类四环液晶单体结构与性能之间的关系。结果发现，引入乙烷桥键的位置及数目对四环液晶热性能的影响较大，对其影响的规律与四环液晶的类型有关。说明在不同类型的四环液晶中，合理地引入乙烷桥键能够获得性能优异的液晶单体。

Abstract

Four ring liquid crystals with ethylene-bridge have been widely used in liquid crystal mixtures. However

their mesomorphism properties have not been reported systematically. The mesomorphism properties of new four ring liquid crystals with ethylene-bridge (EA3E and EA5E) were thoroughly studied by using differential scanning calorimetry (DSC) and polarising optical microscopy (POM). The relationship between structure and properties in the existing four ring liquid crystals with ethylene-bridge was discussed. The results show that the position and number of ethylene-bridge have a great impact on the thermal properties of the four ring liquid crystals. The influence of ethy-lene-bridge on four ring liquid crystals depends on their types. So reasonably introducing ethylene-bridge in different four ring liquid crystals

the liquid crystal monomer with excellent performance can be obtained.

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references

Thomas G, Klaus G, Bernd R.125 years of liquid crystals-a scientific revolution in the home[J].Angew.Chem.Int.Ed.,2013, 52: 2-14.[2] 陈新兵,安忠维. 4,4'-双烷基环己基联苯类液晶的合成与热性能研究概述[J]. 石化技术与应用, 2001,19(6):393-394. Chen X B,An Z W. Synthesis and property of 4,4'-(bisalkyl-trans-cyclohexyl) biphenyl[J].Petrochemical Technology &Application,2001, 19(6): 393-394. (in Chinese)[3] Chow H F, Wan C W, Low K H,et al.A highly selective synthesis of diarylethynes and their oligomers by a palladium-catalyzed sonogashira coupling reaction under phase transfer conditions[J].J. Org. Chem.,2001, 66: 1910-1913.[4] 彭增辉,姚丽双,穆全全,等. 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 Z H, Yao L S, Mu Q Q,et al.Synthesis and properties of fluorinated isothiocyanate phenyl-tolane liquid crystal compounds[J].Chin. J. Liq. Cryst. Displays,2013, 28(4): 479-483. (in Chinese)[5] 孙亮,张智勇,游红军,等. 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 L, Zhang Z Y, You H J,et al.Synthesis and low-temperature properties of lateral difluoro-dipenyltolane compounds[J].Chin. J. Liq. Cryst. Displays,2010, 25(6): 784-791. (in Chinese)[6] 张然,彭增辉,刘永刚,等. 高n低黏度液晶的合成及性能研究[J]. 液晶与显示, 2009,24(6):789-793. Zhang R, Peng Z H, Liu Y G,et al.Synthesis and properties of high birefringence and low viscosity liquid crystal[J].Chin. J. Liq. Cryst. Displays,2009, 24(6): 789-793. (in Chinese)[7] 李娟利,安忠维. 侧向单氟取代双烷基环己基联苯类液晶的合成及其相行为[J]. 应用化学, 2007,24(2):200-205. Li J L, An Z W.Syntheses and thermo analyses of lateral single fluorine substituted 4,4'-bis(trans-4-n-alkylcyclohexyl) biphenyl liquid crystals[J].Chin. J. Appl. Chem.,2007, 24(2): 200-205. (in Chinese)[8] 高津晴義,佐藤久人. 1,2-Bis(cyclohexylphenyl)ethane derivatives: JP, 58008023[P]. 1983-01-18.[9] 胡岚,高仁孝,冯凯. 含环己基(苯基)四环酯类液晶结构与性能关系研究[J]. 液晶与显示, 2006,21(5):418-423. Hu L, Gao R X, Feng K.Relationship between structures and properties of four-ring ester liquid crystals[J].Chin. J. Liq. Cryst. Displays,2006, 21(5): 418-423. (in Chinese)[10] Takatsu H, Sasaki M, Tanaka Y,et al.Tolan-type nematic liquid crystalline compounds: GB, 2155465[P]. 1985-09-25.[11] 李娟利,安忠维. 侧向氟取代双烷基环己基联苯类液晶化合物的介晶性研究[J]. 液晶与显示, 2006,21(3):214-217. Li J L, An Z W.Mesomorphism of lateral fluorine substituted 4,4'-Bis-(trans-4-n-alkylcyclohexyl) biphenyl liquid crystals[J].Chin. J. Liq. Cryst. Displays,2006, 21(3): 214-217. (in Chinese)[12] Eidenschink R. New developments in liquid crystal materials[J].Mol. Cryst. and Liq. Crys.,1985, 123(1): 57-75.[13] 李建,安忠维,马方生,等. 四环酯类液晶化合物:CN,1786109[P]. 2006-06-14. Li J, An Z W, Ma F S,et al.Four-ring ester liquid crystal compounds: CN, 1786109[P]. 2006-06-14.(in Chinese)[14] Takeda K, Tachibana T, Aihara T. 4-cyclohexyl-4'-(2-cyclohexylethyl)tolan derivatives and liquid-crystal compositions containing them:JP, 02059530[P]. 1990-02-28.[15] Balkwill P H, Bishop D I, Pearson A D,et al.Disbustituted ethanes and their use in liquid crystal materials and devices: EP, 117631[P]. 1984-09-05.[16] Dabrowski R, Dziaduszek J, Czuprynski K. Synthesis and mesomorphic properties of mesogens containing two ethane or carbonyloxy bridge groups[J].SPIE-The International Society for Optical Engineering,1995, 2372: 235-241.[17] 李建,安忠维,马方生,等. 四环酯类液晶化合物:CN,1786110[P]. 2006-06-14. Li J, An Z W, Ma F S,et al.Four-ring ester liquid crystal compounds: CN, 1786110[P]. 2006-06-14. (in Chinese)[18] Gray G W, Lacey D, Stanton J E,et al.The effect of lateral fluoro-substitution on the liquid crystal behavior of some 4'-alkylphenylethyl-and trans-4'-alkylcyclohexyl-ethyl-4,4'-disubstituted biphenyls[J].Liq. Cryst.,1986, 1(5): 407-413.

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