聚合物墙表面组成的调控及其对聚合物墙液晶器件光电性能的影响

夏祥; 陆红波; 马超; 刘雪连; 邱龙臻; 徐苗; 朱俊; 张国兵

doi:10.37188/CJLCD.2021-0068

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聚合物墙表面组成的调控及其对聚合物墙液晶器件光电性能的影响

器件物理及器件制备 | 更新时间：2021-09-10

- 聚合物墙表面组成的调控及其对聚合物墙液晶器件光电性能的影响
- Modulation of surface composition of polymer walls and its effect on optoelectronic properties of polymer wall liquid crystal device
- 液晶与显示 2021年36卷第9期页码：1247-1254
- 作者机构：
  
  1.特种显示技术国家工程实验室, 现代显示技术省部共建国家重点实验室培育基地, 合肥工业大学光电技术研究院, 安徽合肥 230009
  2.安徽省先进功能材料与器件重点实验室, 合肥工业大学化学与化工学院, 安徽合肥 230009
  3.合肥工业大学仪器科学与光电工程学院, 安徽合肥 230009
- 作者简介：
  
  [ "夏祥(1995-), 男, 安徽合肥人, 硕士研究生, 2017年于华北科技学院获得学士学位, 主要从事光电高分子材料方面的研究。E-mail: xiaxiang924@126.com" ]
  [ "陆红波(1979-), 男, 安徽合肥人, 博士, 研究员, 2006年于中国科学技术大学获得博士学位, 主要从事新型液晶材料及器件的研究。E-mail: bozhilu@hfut.edu.cn" ]
- 基金信息：
  
  安徽省自然科学基金(1708085MF150)
- DOI：10.37188/CJLCD.2021-0068
  中图分类号： O753.2;TB324
- 收稿日期：2021-03-12，
  
  修回日期：2021-03-26，
  
  纸质出版日期：2021-09
- 稿件说明：
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夏祥, 陆红波, 马超, 等. 聚合物墙表面组成的调控及其对聚合物墙液晶器件光电性能的影响[J]. 液晶与显示, 2021,36(9):1247-1254.

Xiang XIA, Hong-bo LU, Chao MA, et al. Modulation of surface composition of polymer walls and its effect on optoelectronic properties of polymer wall liquid crystal device[J]. Chinese journal of liquid crystals and displays, 2021, 36(9): 1247-1254.
夏祥, 陆红波, 马超, 等. 聚合物墙表面组成的调控及其对聚合物墙液晶器件光电性能的影响[J]. 液晶与显示, 2021,36(9):1247-1254. DOI： 10.37188/CJLCD.2021-0068.

Xiang XIA, Hong-bo LU, Chao MA, et al. Modulation of surface composition of polymer walls and its effect on optoelectronic properties of polymer wall liquid crystal device[J]. Chinese journal of liquid crystals and displays, 2021, 36(9): 1247-1254. DOI： 10.37188/CJLCD.2021-0068.

摘要

本文探究了单体与液晶的相容性对聚合物墙表面组成的影响和表面组成对聚合物墙液晶器件光电性能的影响及其调控方法。选取与液晶相容性相差较大但表面能相近的单体，通过表面引发聚合形成与液晶分层的聚合物薄膜，洗去液晶后用反应离子刻蚀在聚合物表面刻蚀出不同深度。通过衰减全反射红外光谱和X射线光电子能谱仪表征不同深度的组分。最后利用掩模版制备聚合物墙液晶器件，并探究聚合墙表面组成对其光电性能的影响。实验结果表明：在聚合物-液晶界面处富集与液晶相容性高的聚合物组分，并且聚合光强越低，这种组分偏析效果越明显，当聚合光强较低时，聚合物表面组成中的PTFEMA组分占比为68.5%，比高光强时的多出10.6%。聚合物墙的表面组成对液晶器件的光电性能有一定的影响，当光强为10 mW/cm

时器件的阈值电压为0.879 V，而在70 mW/cm

光强时升高到1.172 V。可以利用单体与液晶的相容性差异以及光强调控聚合物墙表面组成，进而影响液晶器件的光电性能。

Abstract

The effect of the compatibility of monomer and liquid crystal on the surface composition of the polymer wall was explored

and the effect of the surface composition on the optoelectronic properties of polymer wall liquid crystal devices and its control method were investigated. Monomers with a large difference in compatibility with liquid crystals but similar surface energy are selected. Polymer films delaminated with liquid crystals are formed by surface initiation

and the polymer are etched to different depths by reactive ion etching after washing away the liquid crystals. The components of the polymer layer with different etching depths were characterized by Attenuated Total Reflection and X-ray photoelectron spectrometer. Polymer wall liquid crystal devices were prepared and the effect of polymer surface composition on their optoelectronic properties was investigated. The experimental results indicate that polymer components with high compatibility with liquid crystals are enriched at the polymer-liquid crystal interface

and the lower the polymerization light intensity

the more pronounced the bias effect of such components. When the polymerization light intensity is low

PTFEMA component in the polymer surface composition is 68.5%

which is 10.6% more than that at high light intensity. This resulted in a difference in the optoelectronic properties of the polymer wall liquid crystal devices prepared at different polymerization light intensities

with a threshold voltage of 0.879 V at a light intensity of 10 mW/cm

and an increase to 1.172 V at 70 mW/cm

light intensity. Polymer wall surface composition can be regulated by the compatibility difference between the monomer and the liquid crystal and the light intensity

which could influence the photoelectric performance of the liquid crystal device.

关键词

Keywords

references

张天翼 , 许军 , 董佳垚 . 胆甾型液晶显示技术和产业发展 . 液晶与显示 , 2011 . 26 ( 6 ): 741 - 745 . DOI: 10.3788/YJYXS20112606.0741 http://doi.org/10.3788/YJYXS20112606.0741 .

T Y ZHANG , J XU , J Y DONG . Overview of technology and industry for cholesteric liquid crystal display . Chinese Journal of Liquid Crystals and Displays , 2011 . 26 ( 6 ): 741 - 745 . DOI: 10.3788/YJYXS20112606.0741 http://doi.org/10.3788/YJYXS20112606.0741 .

S KAWAMORITA , Y SHIBATA , T ISHINABE , 等 . Formation of polymer wall structure on plastic substrate by transfer method of fluororesin for flexible liquid crystal displays . IEICE Transactions on Electronics , 2018 . E101.C ( 11 ): 888 - 891 . DOI: 10.1587/transele.E101.C.888 http://doi.org/10.1587/transele.E101.C.888 .

E A BVYVKTANIR , N GHEORGHIU , J L WEST , 等 . Field-induced polymer wall formation in a bistable smectic-A liquid crystal display . Applied Physics Letters , 2006 . 89 ( 3 ): 031101 DOI: 10.1063/1.2221887 http://doi.org/10.1063/1.2221887 .

S KAWAMORITA , Y SHIBATA , T ISHINABE , 等 . Formation of polymer walls by monomer aggregation control utilizing substrate-surface wettability for flexible LCDs . IEICE Transactions on Electronics , 2017 . E100.C ( 11 ): 1005 - 1011 . DOI: 10.1587/transele.E100.C.1005 http://doi.org/10.1587/transele.E100.C.1005 .

H SATO , H FUJIKAKE , Y IINO , 等 . Flexible grayscale ferroelectric liquid crystal device containing polymer walls and networks . Japanese Journal of Applied Physics , 2002 . 41 ( 8R ): 5302 - 5306 . http://ci.nii.ac.jp/naid/110006341724/en http://ci.nii.ac.jp/naid/110006341724/en .

J W JUNG , S K PARK , S B KWON , 等 . Pixel-isolated liquid crystal mode for flexible display applications . Japanese Journal of Applied Physics , 2004 . 43 ( 7R ): 4269 - 4272 . http://www.tandfonline.com/doi/abs/10.1080/15980316.2005.9651970 http://www.tandfonline.com/doi/abs/10.1080/15980316.2005.9651970 .

周梦怡 , 陆红波 , 谢学文 , 等 . 联萘偶氮苯环状手性剂的制备及其光异构化过程 . 液晶与显示 , 2019 . 34 ( 5 ): 465 - 471 . DOI: 10.3788/YJYXS20193405.0465 http://doi.org/10.3788/YJYXS20193405.0465 .

M Y ZHOU , H B LU , X W XIE , 等 . Preparation and photoisomerization process of dinaphthalene azobenzene cyclic chiral dopant . Chinese Journal of Liquid Crystals and Displays , 2019 . 34 ( 5 ): 465 - 471 . DOI: 10.3788/YJYXS20193405.0465 http://doi.org/10.3788/YJYXS20193405.0465 .

E STEFANIS , C PANAYIOTOU . Prediction of Hansen solubility parameters with a new group-contribution method . International Journal of Thermophysics , 2008 . 29 ( 2 ): 568 - 585 . DOI: 10.1007/s10765-008-0415-z http://doi.org/10.1007/s10765-008-0415-z .

R R DESHMUKH , A R SHETTY . Comparison of surface energies using various approaches and their suitability . Journal of Applied Polymer Science , 2008 . 107 ( 6 ): 3707 - 3717 . DOI: 10.1002/app.27446 http://doi.org/10.1002/app.27446 .

M FINEMAN , S D ROSS . Linear method for determining monomer reactivity ratios in copolymerization . Journal of Polymer Science , 1950 . 5 ( 2 ): 259 - 262 . DOI: 10.1002/pol.1950.120050210 http://doi.org/10.1002/pol.1950.120050210 .

F TVDOS , T KELEN , T FÖLDES-BEREZSNICH , 等 . Analysis of linear methods for determining copolymerization reactivity ratios. Ⅲ. Linear graphic method for evaluating data obtained at high conversion levels . Journal of Macromolecular Science: Part A-Chemistry , 1976 . 10 ( 8 ): 1513 - 1540 . DOI: 10.1080/00222337608060768 http://doi.org/10.1080/00222337608060768 .

A R MAHDAVIAN , M ABDOLLAHI , L MOKHTABAD , 等 . Kinetic study of radical polymerization. Ⅳ. Determination of reactivity ratio in copolymerization of styrene and itaconic acid by 1 H-NMR . Journal of Applied Polymer Science , 2006 . 101 ( 3 ): 2062 - 2069 . DOI: 10.1002/app.23795 http://doi.org/10.1002/app.23795 .

A RANJKESH , T H YOON . Fabrication of a single-substrate flexible thermoresponsive cholesteric liquid-crystal film with wavelength tunability . ACS Applied Materials & Interfaces , 2019 . 11 ( 29 ): 26314 - 26322 . 10.1021/acsami.9b05112 10.1021/acsami.9b05112 .

X H CHEN , L M TOLBERT , C L HENDERSON , 等 . Polymer pattern formation on SiO 2 surfaces using surface monolayer initiated polymerization . Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena , 2001 . 19 ( 6 ): 2013 - 2019 . DOI: 10.1116/1.1409391 http://doi.org/10.1116/1.1409391 .

A A MIRONOVA , A M POPOV , M L ZANAVESKIN . Effect of reactive ion etching on the surface of polymethylmethacrylate . Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques , 2015 . 9 ( 3 ): 457 - 461 . DOI: 10.1134/S1027451015030088 http://doi.org/10.1134/S1027451015030088 .

H NABESAWA , T HITOBO , S WAKABAYASHI , 等 . Polymer surface morphology control by reactive ion etching for microfluidic devices . Sensors and Actuators B: Chemical , 2008 . 132 ( 2 ): 637 - 643 . DOI: 10.1016/j.snb.2008.01.050 http://doi.org/10.1016/j.snb.2008.01.050 .

D H KIM , Y H LEE , C C PARK , 等 . Synthesis and surface properties of self-crosslinking core-shell acrylic copolymer emulsions containing fluorine/silicone in the shell . Colloid and Polymer Science , 2014 . 292 ( 1 ): 173 - 183 . DOI: 10.1007/s00396-013-3064-0 http://doi.org/10.1007/s00396-013-3064-0 .

J X CHEN , J A GARDELLA . Quantitative ATR FT-IR analysis of surface segregation of polymer blends of polystyrene/poly(dimethylsiloxane) co-polystyrene . Applied Spectroscopy , 1998 . 52 ( 3 ): 361 - 366 . DOI: 10.1366/0003702981943824 http://doi.org/10.1366/0003702981943824 .

Y ZHANG , R Q LIN , Y SHI , 等 . Synthesis and surface migration of polydimethylsiloxane and perfluorinated polyether in modified waterborne polyurethane . Polymer Bulletin , 2019 . 76 ( 11 ): 5517 - 5535 . DOI: 10.1007/s00289-018-2666-6 http://doi.org/10.1007/s00289-018-2666-6 .

J LUKÁŠ , R N S SODHI , M V SEFTON . An XPS study of the surface reorientation of statistical methacrylate copolymers . Journal of Colloid and Interface Science , 1995 . 174 ( 2 ): 421 - 427 . DOI: 10.1006/jcis.1995.1410 http://doi.org/10.1006/jcis.1995.1410 .

C TON-THAT , A G SHARD , D O H TEARE , 等 . XPS and AFM surface studies of solvent-cast PS/PMMA blends . Polymer , 2001 . 42 ( 3 ): 1121 - 1129 . DOI: 10.1016/S0032-3861(00)00448-1 http://doi.org/10.1016/S0032-3861(00)00448-1 .

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