Effects of monomer alkyl chain length on electro-optical properties of polymer dispersed liquid crystal film

Teng ZENG; Tao-yu HE; Ying-han WANG

doi:10.37188/CJLCD.2021-0153

您当前的位置：

首页 >

文章列表页 >

Effects of monomer alkyl chain length on electro-optical properties of polymer dispersed liquid crystal film

Device Physics and Device Preparation | 更新时间：2021-09-30

- Effects of monomer alkyl chain length on electro-optical properties of polymer dispersed liquid crystal film
- Chinese Journal of Liquid Crystals and Displays Vol. 36, Issue 10, Pages: 1362-1368(2021)
- 作者机构：
  
  四川大学高分子科学与工程学院高分子材料与工程国家重点实验室, 四川成都 610065
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(50973067)
- DOI：10.37188/CJLCD.2021-0153
  CLC： O753.2
- Received：26 June 2021，
  
  Revised：12 July 2021，
  
  Published：2021-10
- 稿件说明：
移动端阅览
Teng ZENG, Tao-yu HE, Ying-han WANG. Effects of monomer alkyl chain length on electro-optical properties of polymer dispersed liquid crystal film[J]. Chinese journal of liquid crystals and displays, 2021, 36(10): 1362-1368.
DOI：

Teng ZENG, Tao-yu HE, Ying-han WANG. Effects of monomer alkyl chain length on electro-optical properties of polymer dispersed liquid crystal film[J]. Chinese journal of liquid crystals and displays, 2021, 36(10): 1362-1368. DOI： 10.37188/CJLCD.2021-0153.

摘要

聚合物分散液晶（PDLC）膜是微米尺寸的液晶微滴嵌入连续聚合物基体中形成的薄膜。利用点击化学方法制备PDLC可避免传统光聚合诱导相分离法造成的染料分解等问题。本研究用4种不同烷基链长度的聚乙二醇二丙烯酸酯（PEGDA）作为原料，利用硫醇-烯点击化学反应和硫醇-异氰酸酯偶联反应合成了PDLC膜，研究烯烃单体的烷基链长度对PDLC膜电光性能的影响。结果表明，随着体系中烯烃烷基链长度增加，阈值电压（

）、饱和电压（

sat

）和对比度（CR）下降，但关态透光率（

off

）和开态透光率（

）上升。通过选用烷基链长度适当的烯烃可以制得综合电光性能良好的PDLC膜。

Abstract

Polymer dispersed liquid crystal (PDLC) is a thin film formed by liquid crystal (LC) droplets embedded in a continuous polymer matrix in the form of micron-sized droplets. The use of click chemistry method to prepare PDLC can avoid the problems of dye decomposition caused by traditional photopolymerization-induced phase separation. In this study

four polyethylene glycol diacrylates (PEGDA) of different alkyl chain lengths were used as raw materials to synthesize PDLC films through thiol-ene click reaction and thiol-isocyanate coupling reaction

to study the effects of different alkyl chain length olefin monomers on the electro-optical properties of PDLC films. The results showed that as the chain length of olefin alkyl chain in the system increased

the threshold voltage (

)

saturation voltage (

sat

) and contrast ratio (CR) decreased

while off-state transmittance (

off

) and on-state transmittance (

) increased. By selecting olefin with appropriate alkyl chain length

PDLC films with good electro-optical properties can be prepared.

关键词

Keywords

references

F MATEEN , H OH , W JUNG , 等 . Polymer dispersed liquid crystal device with integrated luminescent solar concentrator . Liquid Crystals , 2018 . 45 ( 4 ): 498 - 506 . DOI: 10.1080/02678292.2017.1357845 http://doi.org/10.1080/02678292.2017.1357845 .

S ŽUMER , J W DOANE . Light scattering from a small nematic droplet . Physical Review A , 1986 . 34 ( 4 ): 3373 - 3386 . DOI: 10.1103/PhysRevA.34.3373 http://doi.org/10.1103/PhysRevA.34.3373 .

Y G MARINOV , G B HADJICHRISTOV , A G PETROV , 等 . Electro-optical response of polymer-dispersed liquid crystal single layers of large nematic droplets oriented by rubbed teflon nanolayers . Journal of Applied Physics , 2013 . 113 ( 6 ): 064301 DOI: 10.1063/1.4789897 http://doi.org/10.1063/1.4789897 .

J H HUANG , J LI , J J XU , 等 . Simultaneous achievement of high visible transmission and near-infrared heat shielding in flexible liquid crystal-based smart windows via electrode design . Solar Energy , 2019 . 188 857 - 864 . DOI: 10.1016/j.solener.2019.06.063 http://doi.org/10.1016/j.solener.2019.06.063 .

L ZHOU , Z M HE , C HAN , 等 . Switchable anti-peeping film for liquid crystal displays from polymer dispersed liquid crystals . Liquid Crystals , 2019 . 46 ( 5 ): 718 - 724 . DOI: 10.1080/02678292.2018.1522673 http://doi.org/10.1080/02678292.2018.1522673 .

H L ZHANG , H DENG , H REN , 等 . See-through 2D/3D compatible integral imaging display system using lens-array holographic optical element and polymer dispersed liquid crystal . Optics Communications , 2020 . 456 124615 DOI: 10.1016/j.optcom.2019.124615 http://doi.org/10.1016/j.optcom.2019.124615 .

H LI , F PAN , Y T WU , 等 . Turbulence imaging simulation based on electrically tunable polymer dispersed liquid crystals cell . Materials Science , 2019 . 25 ( 2 ): 115 - 120 . http://www.researchgate.net/publication/332156666_Turbulence_Imaging_Simulation_Based_on_Electrically_Tunable_Polymer_Dispersed_Liquid_Crystals_Cell http://www.researchgate.net/publication/332156666_Turbulence_Imaging_Simulation_Based_on_Electrically_Tunable_Polymer_Dispersed_Liquid_Crystals_Cell .

邵磊山 , 李静静 , 杜鑫 , 等 . 大分子引发剂的分子量对聚合物分散液晶的微观形貌影响 . 液晶与显示 , 2012 . 27 ( 6 ): 736 - 741 . DOI: 10.3788/YJYXS20122706.0736 http://doi.org/10.3788/YJYXS20122706.0736 .

L S SHAO , J J LI , X DU , 等 . Effect of molecular weight of macroinitiator on morphology of polymer dispersed liquid crystal . Chinese Journal of Liquid Crystals and Displays , 2012 . 27 ( 6 ): 736 - 741 . DOI: 10.3788/YJYXS20122706.0736 http://doi.org/10.3788/YJYXS20122706.0736 .

M KIM , K J PARK , S SEOK , 等 . Fabrication of microcapsules for dye-doped polymer-dispersed liquid crystal-based smart windows . ACS Applied Materials & Interfaces , 2015 . 7 ( 32 ): 17904 - 17909 . http://www.onacademic.com/detail/journal_1000038119705910_135f.html http://www.onacademic.com/detail/journal_1000038119705910_135f.html .

R R DESHMUKH , M K MALIK . Effect of dichroic dye on phase separation kinetics and electro-optical characteristics of polymer dispersed liquid crystals . Journal of Physics and Chemistry of Solids , 2013 . 74 ( 2 ): 215 - 224 . DOI: 10.1016/j.jpcs.2012.09.009 http://doi.org/10.1016/j.jpcs.2012.09.009 .

W H BINDER , R SACHSENHOFER . 'Click' chemistry in polymer and materials science . Macromolecular Rapid Communications , 2007 . 28 ( 1 ): 15 - 54 . DOI: 10.1002/marc.200600625 http://doi.org/10.1002/marc.200600625 .

ME KI , H KOO . Biomedical applications of copper-free click chemistry: in vitro , in vivo , and ex vivo . Chemical Science , 2019 . 10 ( 34 ): 7835 - 7851 . DOI: 10.1039/C9SC03368H http://doi.org/10.1039/C9SC03368H .

C E HOYLE , A B LOWE , C N BOWMAN . A multifaceted toolbox for small molecule and polymer synthesis . Chemical Society Reviews , 2010 . 39 ( 4 ): 1355 - 1387 . DOI: 10.1039/b901979k http://doi.org/10.1039/b901979k .

C F H ALLEN , J O FOURNIER , W J HUMPHLETT . The thermal reversibility of the michael reaction: IV. Thiol adducts . Canadian Journal of Chemistry , 2011 . 42 ( 11 ): 2616 - 2620 . http://www.nrcresearchpress.com/doi/abs/10.1139/v66-347 http://www.nrcresearchpress.com/doi/abs/10.1139/v66-347 .

T Y HE , B YANG , L ZHANG , 等 . A study on electro-optical properties of polymer dispersed liquid crystal films doped with barium titanate nanoparticles prepared by nucleophile-initiated thiol-ene click reaction . Liquid Crystals , 2020 . 47 ( 7 ): 1004 - 1018 . DOI: 10.1080/02678292.2019.1701112 http://doi.org/10.1080/02678292.2019.1701112 .

L ZHANG , Z Q SHI , T Y HE , 等 . Effects of the chain length of crosslinking agent and dye-doped amount on the electro-optical properties of polymer-dispersed liquid crystal films prepared by nucleophile-initiated thiol-ene click reaction . Liquid Crystals , 2020 . 47 ( 1 ): 42 - 53 . DOI: 10.1080/02678292.2019.1626924 http://doi.org/10.1080/02678292.2019.1626924 .

L ZHANG , Y W LIU , Z Q SHI , 等 . Effects of alkyl chain length of monomer and dye-doped type on the electro-optical properties of polymer-dispersed liquid crystal films prepared by nucleophile-initiated thiol-ene click reaction . Liquid Crystals , 2020 . 47 ( 5 ): 658 - 672 . DOI: 10.1080/02678292.2019.1673909 http://doi.org/10.1080/02678292.2019.1673909 .

M KASHIMA , H CAO , Q Y MENG , 等 . The influence of crosslinking agents on the morphology and electro-optical performances of PDLC films . Journal of Applied Polymer Science , 2010 . 117 ( 6 ): 3434 - 3440 . http://www.onacademic.com/detail/journal_1000033762801210_cc38.html http://www.onacademic.com/detail/journal_1000033762801210_cc38.html .

G P JR MONTGOMERY , J L WEST , W TAMURA-LIS . Light scattering from polymer-dispersed liquid crystal films: droplet size effects . Journal of Applied Physics , 1991 . 69 ( 3 ): 1605 - 1612 . DOI: 10.1063/1.347256 http://doi.org/10.1063/1.347256 .

Z Q SHI , Y GUAN , F WANG , 等 . Facile fabrication of polymer-dispersed liquid crystal films via nucleophile-initiated thiol-ene click reaction . Liquid Crystals , 2017 . 44 ( 11 ): 1695 - 1700 . DOI: 10.1080/02678292.2017.1308023 http://doi.org/10.1080/02678292.2017.1308023 .

Y J SUN , Y Z GAO , L ZHOU , 等 . A study on the electro-optical properties of thiol-ene polymer dispersed cholesteric liquid crystal (PDChLC) films . Molecules , 2017 . 22 ( 2 ): 317 DOI: 10.3390/molecules22020317 http://doi.org/10.3390/molecules22020317 .

Y ZHANG , J YANG , L ZHOU , 等 . Preparation of polymer-dispersed liquid crystal doped with indium tin oxide nanoparticles . Liquid Crystals , 2018 . 45 ( 7 ): 1068 - 1077 . DOI: 10.1080/02678292.2017.1408864 http://doi.org/10.1080/02678292.2017.1408864 .

Y ZHANG , L ZHOU , J YANG , 等 . Effects of crosslinking agent/diluents/thiol on morphology of the polymer matrix and electro-optical properties of polymer-dispersed liquid crystal . Liquid Crystals , 2018 . 45 ( 5 ): 728 - 735 . DOI: 10.1080/02678292.2017.1376716 http://doi.org/10.1080/02678292.2017.1376716 .

Views

217

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effects of monomer alkyl chain length on the electro-optical properties of polymer dispersed liquid crystal film

Effects of reaction temperature on electro-optical properties of polymer-dispersed liquid crystal films fabricated by nucleophile-initiated thiol-ene click reaction

Effect of Main-Chain Flexibility of Macro-Initiator on Electro-Optical Properties of Polymer Dispersed Liquid Crystal

Influence of polymeric monomers on the electro-optic properties of polymer dispersed liquid crystal films

Related Author

ZENG Teng

HE Tao-yu

WANG Ying-han

Tao-yu He

Ying-han Wang

Teng Zeng

Ying-han WANG

Zhi-qing SHI

Related Institution

College of Polymer Science and Engineering， State Key Laboratory of Polymer Materialsand Engineering， Sichuan University

Research Institute of Maoming Petrochemical Company, SINOPEC

College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials and Engineering, Sichuan University

State Key Laboratory of Polymer Materials and Engineering of China, College of Polymer Science and Engineering, Sichuan University

Shijiazhuang Chengzhi Yonghua Display Material Co. Ltd.

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