Synthesis and characterization of side chain liquid crystalline polymers displaying cholesteric phase at room temperature

Li GAO; Lu-lu GUO; Xin-shi CHEN; Miao YANG; Mei TIAN

doi:10.3788/YJYXS20203506.0524

您当前的位置：

首页 >

文章列表页 >

Synthesis and characterization of side chain liquid crystalline polymers displaying cholesteric phase at room temperature

Materials and Devices | 更新时间：2020-07-13

- Synthesis and characterization of side chain liquid crystalline polymers displaying cholesteric phase at room temperature
- Chinese Journal of Liquid Crystals and Displays Vol. 35, Issue 6, Pages: 524-530(2020)
- 作者机构：
  
  1.新乡医学院三全学院化学教研室, 河南新乡 453003
  2.广西壮族自治区环境保护科学研究院, 广西南宁 530000
  3.东北大学理学院, 辽宁沈阳 110004
- 作者简介：
- 基金信息：
  
  Key Scientific Research Project of Henan Higher Education Institutions(20B350007);Projects of University Teaching Reform Research(201508)
- DOI：10.3788/YJYXS20203506.0524
  CLC： O753.2
- Received：12 September 2019，
  
  Revised：07 November 2019，
  
  Accepted：07 November 2019，
  
  Published：05 June 2020
- 稿件说明：
移动端阅览
Li GAO, Lu-lu GUO, Xin-shi CHEN, et al. Synthesis and characterization of side chain liquid crystalline polymers displaying cholesteric phase at room temperature[J]. Chinese journal of liquid crystals and displays, 2020, 35(6): 524-530.
DOI：

Li GAO, Lu-lu GUO, Xin-shi CHEN, et al. Synthesis and characterization of side chain liquid crystalline polymers displaying cholesteric phase at room temperature[J]. Chinese journal of liquid crystals and displays, 2020, 35(6): 524-530. DOI： 10.3788/YJYXS20203506.0524.

摘要

将聚甲基含氢硅氧烷（PMHS）与向列相柔性单体11-（4'-（4-乙氧基苯甲酸）苯）十一烯酸酯（M

）和胆甾相单体烯丙氧基苯甲酸胆甾醇酯（M

）接枝共聚合成了聚合物P

。利用红外光谱（FTIR）、氢谱（

H NMR）、差示扫描量热法（DSC）、偏光分析（POM）、X射线衍射分析（XRD）、热失重分析（TGA）、旋光分析等手段研究了单体和聚合物的结构和液晶性能。结果表明，除聚合物P

为向列型液晶聚合物外，P

为胆甾型液晶聚合物，即向列相柔性单体M

的引入并未改变胆甾相，而且与柔软的硅氧烷主链共同作用起到了降低玻璃化温度（P

、P

在室温即出现液晶态）、拓宽液晶区间、稳定液晶相、降低成本的作用，有利于液晶聚合物的应用。

Abstract

A series of liquid crystal (LC) polymers (P

) were synthesized by grafting with nematic flexible monomer 4-(undec-10-enoyloxy) phenyl 4-ethoxybenzoate (M

) and cholesteric monomer cholesteryl allyloxybenzoate (M

) to polymethyl hydrosiloxane (PMHS). The chemical structures and properties of the monomers and copolymers were investigated by means of fourier transform infrared spectroscopy (FTIR)

nuclear magnetic resonance hydrogen spectrometer (

HNMR)

differential scanning calorimetry (DSC)

polarised optical microscopy (POM)

X-ray diffraction (XRD)

thermogravimetric analysis (TGA) and polarimeter. The analyses show that P

are cholesteric LC polymers

except that P

is a nematic LC polymer. The introduction of nematic flexible monomer M

did not change the cholesteric phase. The introduction of M

together with the soft siloxane main chain play a role in reducing the glass transition temperature (P

and P

show LC state at room temperature)

widening the LC range

stabilizing the LC phase and reducing the cost

which is beneficial to the application of LC polymers.

关键词

Keywords

references

Y KIM , N TAMAOKI . A photoresponsive planar chiral azobenzene dopant with high helical twisting power . J. Mater. Chem. C , 2014 . 2 ( 43 ): 9258 - 9264 . DOI: 10.1039/C4TC01851F http://doi.org/10.1039/C4TC01851F .

T YAMAMOTO , M SANO . Chirality-induced helical self-propulsion of cholesteric liquid crystal droplets . Soft Matter , 2017 . 13 ( 18 ): 3328 - 3333 . DOI: 10.1039/C7SM00337D http://doi.org/10.1039/C7SM00337D .

C C LUO , Y G JIA , K M SONG , 等 . The effect of terminal alkoxy chain on mesophase behaviour, optical property and structure of chiral liquid crystal compounds derived from (-)-menthol . Liq. Cryst. , 2017 . 44 ( 14-15 ): 2366 - 2378 . DOI: 10.1080/02678292.2017.1330431 http://doi.org/10.1080/02678292.2017.1330431 .

D COATES . Development and applications of cholesteric liquid crystals . Liq. Cryst. , 2015 . 42 ( 5/6 ): 653 - 665 . http://cn.bing.com/academic/profile?id=e849cb28a27c22a12edf819d6107ff79&encoded=0&v=paper_preview&mkt=zh-cn http://cn.bing.com/academic/profile?id=e849cb28a27c22a12edf819d6107ff79&encoded=0&v=paper_preview&mkt=zh-cn .

Y M LIU , L YU , Y JIANG , 等 . Self-organized cholesteric liquid crystal polymer films with tunable photonic band gap as transparent and flexible back-reflectors for dye-sensitized solar cells . Nano Energy , 2016 . 26 648 - 656 . DOI: 10.1016/j.nanoen.2016.06.021 http://doi.org/10.1016/j.nanoen.2016.06.021 .

L Y ZHANG , Y Z GAO , P SONG , 等 . Research progress of cholesteric liquid crystals with broadband reflection characteristics in application of intelligent optical modulation materials . Chin. Phys. B , 2016 . 25 ( 9 ): 096101 DOI: 10.1088/1674-1056/25/9/096101 http://doi.org/10.1088/1674-1056/25/9/096101 .

Y KIM , N TAMAOKI . Asymmetric dimers of chiral azobenzene dopants exhibiting unusual helical twisting power upon photoswitching in cholesteric liquid crystals . ACS Appl. Mater. Interfaces , 2016 . 8 ( 7 ): 4918 - 4926 . DOI: 10.1021/acsami.5b11888 http://doi.org/10.1021/acsami.5b11888 .

K ORZECHOWSKI , M W SIERAKOWSKI , M SALA-TEFELSKA , 等 . Polarization properties of cubic blue phases of a cholesteric liquid crystal . Opt. Mater. , 2017 . 69 259 - 264 . DOI: 10.1016/j.optmat.2017.04.051 http://doi.org/10.1016/j.optmat.2017.04.051 .

J C LAI , W F CHENG , C K LIU , 等 . Optically switchable bistable guest-host displays in chiral-azobenzene- and dichroic-dye-doped cholesteric liquid crystals . Dyes Pigments , 2019 . 163 641 - 646 . DOI: 10.1016/j.dyepig.2018.12.030 http://doi.org/10.1016/j.dyepig.2018.12.030 .

T YAMAMOTO , M KURODA , M SANO . Three-dimensional analysis of thermo-mechanically rotating cholesteric liquid crystal droplets under a temperature gradient . Europhysics Letters , 2015 . 109 ( 4 ): 46001 DOI: 10.1209/0295-5075/109/46001 http://doi.org/10.1209/0295-5075/109/46001 .

M N YU , H YANG , D K YANG . Stabilized electrically induced Helfrich deformation and enhanced color tuning in cholesteric liquid crystals . Soft Matter , 2017 . 13 ( 46 ): 8728 - 8735 . DOI: 10.1039/C7SM01997A http://doi.org/10.1039/C7SM01997A .

A OGIWARA , H KAKIUCHIDA . Thermally tunable light filter composed of cholesteric liquid crystals with different temperature dependence . Sol. Energy Mater. Sol. C , 2016 . 157 250 - 258 . DOI: 10.1016/j.solmat.2016.05.039 http://doi.org/10.1016/j.solmat.2016.05.039 .

张卫东 , 李灵巧 , 胡锦泉 , 等 . 基于堆栈稀疏自编码融合核极限学习机的近红外光谱药品鉴别 . 分析化学 , 2018 . 46 ( 9 ): 1446 - 1454 . http://d.old.wanfangdata.com.cn/Periodical/fxhx201809016 http://d.old.wanfangdata.com.cn/Periodical/fxhx201809016 .

W D ZHANG , L Q LI , J Q HU , 等 . Drug discrimination by near infrared spectroscopy based on stacked sparse auto-encoders combined with kernel extreme learning machine . Chinese Journal of Analytical Chemistry , 2018 . 46 ( 9 ): 1446 - 1454 . http://d.old.wanfangdata.com.cn/Periodical/fxhx201809016 http://d.old.wanfangdata.com.cn/Periodical/fxhx201809016 .

庞博 , 葛丰 , 邱龙臻 . 聚3-己基噻吩- b -聚十六烷氧基联烯嵌段聚合物的制备及其场效应性能 . 发光学报 , 2016 . 37 ( 6 ): 669 - 675 . http://d.old.wanfangdata.com.cn/Periodical/fgxb201606006 http://d.old.wanfangdata.com.cn/Periodical/fgxb201606006 .

B PANG , F GE , L Z QIU . Synthesis and field effect transistor performance of poly(3-hexylthiophene)- b -poly(hexadecyloxylallene) blockpolymer . Chinese Journal of Luminescence , 2016 . 37 ( 6 ): 669 - 675 . http://d.old.wanfangdata.com.cn/Periodical/fgxb201606006 http://d.old.wanfangdata.com.cn/Periodical/fgxb201606006 .

白向阳 , 陈诺 , 檀文 , 等 . 席夫碱修饰的α-氰基二苯乙烯荧光液晶材料的合成与发光性质 . 发光学报 , 2016 . 37 ( 5 ): 532 - 537 . http://d.old.wanfangdata.com.cn/Periodical/fgxb201605004 http://d.old.wanfangdata.com.cn/Periodical/fgxb201605004 .

X Y BAI , N CHEN , W TAN , 等 . Synthesis and luminescence property of schiff base modified α-cyanostilbene derivative fluorescent liquid crystals material . Chinese Journal of Luminescence , 2016 . 37 ( 5 ): 532 - 537 . http://d.old.wanfangdata.com.cn/Periodical/fgxb201605004 http://d.old.wanfangdata.com.cn/Periodical/fgxb201605004 .

肖仕芸 , 赵泽伟 , 丁筑红 , 等 . 基于 1 H NMR与多元统计分析的薏苡仁油加速氧化特性研究 . 分析化学 , 2020 . 48 ( 4 ): 551 - 558 . http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=fxhx202004015 http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=fxhx202004015 .

S Y XIAO , Z W ZHAO , Z H DING , 等 . Study on accelerated oxidation characteristics of coix seed oil based on 1 H nuclear magnetic resonance and multivariate statistical analysis . Chinese Journal of Analytical Chemistry , 2020 . 48 ( 4 ): 551 - 558 . http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=fxhx202004015 http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=fxhx202004015 .

陆红波 , 吴少君 , 张超 , 等 . α-氰基取代二苯乙烯衍生物的合成与发光特性研究 . 发光学报 , 2015 . 36 ( 9 ): 983 - 988 . http://d.old.wanfangdata.com.cn/Periodical/fgxb201509001 http://d.old.wanfangdata.com.cn/Periodical/fgxb201509001 .

H B LU , S J WU , C ZHANG , 等 . Synthesis and photoluminescence property of α-cyanostilbene derivatives molecules . Chinese Journal of Luminescence , 2015 . 36 ( 9 ): 983 - 988 . http://d.old.wanfangdata.com.cn/Periodical/fgxb201509001 http://d.old.wanfangdata.com.cn/Periodical/fgxb201509001 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

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