改变直流电场方向调控聚合物稳定胆甾相液晶的反射带隙

张欣敏; 陆红波; 王琦; 王藏玉; 徐苗; 朱俊; 邱龙臻

doi:10.37188/CJLCD.2021-0061

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改变直流电场方向调控聚合物稳定胆甾相液晶的反射带隙

器件物理及器件制备 | 更新时间：2021-08-05

- 改变直流电场方向调控聚合物稳定胆甾相液晶的反射带隙
- Modulation of reflection band in polymer-stabilized cholesteric liquid crystals by changing DC electric field direction
- 液晶与显示 2021年36卷第8期页码：1075-1083
- 作者机构：
  
  1.合肥工业大学特种显示技术国家工程实验室先进显示技术国家重点实验室安徽省特种显示与成像技术创新中心光电技术研究院, 安徽合肥 230009
  2.合肥工业大学化学与化工学院, 安徽合肥 230009
- 作者简介：
  
  [ "张欣敏(1993-), 女, 山西吕梁人, 硕士研究生, 2017年于安徽农业大学获得学士学位, 主要从事光电高分子材料方面的研究。E-mail: 1215064540@qq.com" ]
  [ "陆红波(1979-), 男, 安徽合肥人, 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方面的研究。E-mail: bozhilu@hfut.edu.cn" ]
- 基金信息：
  
  国家自然科学基金(61805066);安徽省自然科学基金(1708085MF150);安徽省杰出青年基金(1808085J03);中央高校基础研究基金(JZ2018HGPB0276)
- DOI：10.37188/CJLCD.2021-0061
  中图分类号： O753.2;TN29
- 收稿日期：2021-03-08，
  
  修回日期：2021-03-26，
  
  纸质出版日期：2021-08
- 稿件说明：
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张欣敏, 陆红波, 王琦, 等. 改变直流电场方向调控聚合物稳定胆甾相液晶的反射带隙[J]. 液晶与显示, 2021,36(8):1075-1083.

Xin-min ZHANG, Hong-bo LU, Qi WANG, et al. Modulation of reflection band in polymer-stabilized cholesteric liquid crystals by changing DC electric field direction[J]. Chinese journal of liquid crystals and displays, 2021, 36(8): 1075-1083.
张欣敏, 陆红波, 王琦, 等. 改变直流电场方向调控聚合物稳定胆甾相液晶的反射带隙[J]. 液晶与显示, 2021,36(8):1075-1083. DOI： 10.37188/CJLCD.2021-0061.

Xin-min ZHANG, Hong-bo LU, Qi WANG, et al. Modulation of reflection band in polymer-stabilized cholesteric liquid crystals by changing DC electric field direction[J]. Chinese journal of liquid crystals and displays, 2021, 36(8): 1075-1083. DOI： 10.37188/CJLCD.2021-0061.

摘要

具有宽带反射特性的胆甾相液晶在众多领域有广泛的应用前景。为了拓展调控反射带隙的方法，实现在所需波谱范围内的带隙调控，本文通过添加紫外吸收染料，制备了一种聚合物网络梯度分布的新型聚合物稳定胆甾相液晶器件。实验结果表明，聚合物网络的梯度分布使液晶盒上下表面附近的聚合物网络弹性产生了显著的差异，因此，其电诱导的反射带隙拓宽可以改变直流电场的方向进行调谐。当液晶盒厚度为40 μm，染料浓度为1.2%的PSCLC，在施加12 V的直流电场时，面向光源为正极时的反射带隙位于570~778 nm，改变电场方向后，反射带隙红移至598~816 nm。这项研究为宽带反射胆甾相液晶材料提供了一种新的策略，在智能窗户、激光防护、数据存储等方面具有潜在的应用。

Abstract

Cholesteric liquid crystals with broadband reflection properties have a wide range of applications in many fields. In order to expand the method of modulating the reflection band and achieve band modulation in the desired spectral range

a new polymer-stabilized cholesteric liquid crystal device with polymer network gradient distribution is prepared by adding UV-absorbing dyes. The experimental results show that the gradient distribution of polymer network makes a significant difference in the elasticity of polymer network near the upper and lower surfaces of the cell

so that its electrically induced reflection band broadening can be tuned by changing the direction of the direct current electric field. When the cell thickness is 40 μm and the dye concentration is 1.2% of PSCLC

the reflective band facing the light source as the positive pole is located at 570~778 nm when a 12 V DC electric field is applied

and the reflective band is red-shifted to 598~816 nm after changing the electric field direction. This research provides a new strategy for broadband reflective cholesteric liquid crystal materials that have potential applications in smart windows

laser protection

data storage

etc.

关键词

Keywords

references

李昌立 , 孙晶 , 蔡红星 , 等 . 胆甾相液晶的光学特性 . 液晶与显示 , 2002 . 17 ( 3 ): 193 - 198 . DOI: 10.3969/j.issn.1007-2780.2002.03.007 http://doi.org/10.3969/j.issn.1007-2780.2002.03.007 .

C L LI , J SUN , H X CAI , 等 . Optical properties of cholesteric liquid crystals . Chin. J. Liq. Cryst. Displays , 2002 . 17 ( 3 ): 193 - 198 . DOI: 10.3969/j.issn.1007-2780.2002.03.007 http://doi.org/10.3969/j.issn.1007-2780.2002.03.007 .

X W CHEN , L WANG , Y J CHEN , 等 . Broadband reflection of polymer-stabilized chiral nematic liquid crystals induced by a chiral azobenzene compound . Chem. Commun. , 2014 . 50 ( 6 ): 691 - 694 . DOI: 10.1039/C3CC47438K http://doi.org/10.1039/C3CC47438K .

V SHARMA , M CRNE , J O PARK , 等 . Structural origin of circularly polarized iridescence in jeweled beetles . Science , 2009 . 325 ( 5939 ): 449 - 451 . DOI: 10.1126/science.1172051 http://doi.org/10.1126/science.1172051 .

Z Y BIAN , K X Li , W HUANG , 等 . Characteristics of selective reflection of chiral nematic liquid crystalline gels with a nonuniform pitch distribution . Appl. Phys. Lett. , 2007 . 91 ( 20 ): 201908 DOI: 10.1063/1.2812539 http://doi.org/10.1063/1.2812539 .

LI Z L, DESAI P, AKINS R B, et al . Electrically tunable color for full-color reflective displays[C]// Proceedings SPIE 4658, Liquid Crystal Materials , Devices , and Applications Ⅷ. San Jose, California, United States: SPIE, 2002: 7-13.

H FINKELMANN , S T KIM , A MUÑOZ , 等 . Tunable mirrorless lasing in cholesteric liquid crystalline elastomers . Adv. Mater. , 2001 . 13 ( 14 ): 1069 - 1072 . DOI: 10.1002/1521-4095(200107)13:14<1069::AID-ADMA1069>3.0.CO;2-6 http://doi.org/10.1002/1521-4095(200107)13:14<1069::AID-ADMA1069>3.0.CO;2-6 .

FORGET S, CHÉNAI S. Towards applications of organic solid-state lasers[M]//FORGET S, CHÉNAIS S. Organic Solid-State Lasers . Berlin: Springer, 2013: 151-166.

H KHANDELWAL , M G DEBIJE , T J WHITE , 等 . Electrically tunable infrared reflector with adjustable bandwidth broadening up to 1100 nm . J. Mater. Chem. A , 2016 . 4 ( 16 ): 6064 - 6069 . DOI: 10.1039/C6TA01647B http://doi.org/10.1039/C6TA01647B .

C E OCHOA , M B C ARIES , E J VAN LOENEN , 等 . Considerations on design optimization criteria for windows providing low energy consumption and high visual comfort . Appl. Energy , 2012 . 95 238 - 245 . DOI: 10.1016/j.apenergy.2012.02.042 http://doi.org/10.1016/j.apenergy.2012.02.042 .

H KHANDELWAL , R C G M LOONEN , J L M HENSEN , 等 . Electrically switchable polymer stabilised broadband infrared reflectors and their potential as smart windows for energy saving in buildings . Sci. Rep. , 2015 . 5 ( 1 ): 11773 DOI: 10.1038/srep11773 http://doi.org/10.1038/srep11773 .

朱智康 , 黄凯 , 张鸿州 , 等 . 多波长与带宽可调液晶滤波器 . 液晶与显示 , 2020 . 36 ( 4 ): 516 - 521 . http://cjlcd.lightpublishing.cn/thesisDetails#10.37188/CJLCD.2020-0306&graphicAbstract=0 http://cjlcd.lightpublishing.cn/thesisDetails#10.37188/CJLCD.2020-0306&graphicAbstract=0 .

Z K ZHU , K HUANG , H Z ZHANG , 等 . Multi-wavelength and bandwidth tunable liquid crystal filter . Chin. J. Liq. Cryst. Displays , 2020 . 36 ( 4 ): 516 - 521 . http://cjlcd.lightpublishing.cn/thesisDetails#10.37188/CJLCD.2020-0306&graphicAbstract=0 http://cjlcd.lightpublishing.cn/thesisDetails#10.37188/CJLCD.2020-0306&graphicAbstract=0 .

W X ZHANG , S KRAGT , A P H J SCHENNING , 等 . Easily processable temperature-responsive infrared-reflective polymer coatings . ACS Omega , 2017 . 2 ( 7 ): 3475 - 3482 . DOI: 10.1021/acsomega.7b00454 http://doi.org/10.1021/acsomega.7b00454 .

M MITOV . Cholesteric liquid crystals with a broad light reflection band . Adv. Mater. , 2012 . 24 ( 47 ): 6260 - 6276 . DOI: 10.1002/adma.201202913 http://doi.org/10.1002/adma.201202913 .

J B GUO , H YANG , R LI , 等 . Effect of network concentration on the performance of polymer-stabilized cholesteric liquid crystals with a double-handed circularly polarized light reflection band . J. Phys. Chem. C , 2009 . 113 ( 37 ): 16538 - 16543 . DOI: 10.1021/jp903394r http://doi.org/10.1021/jp903394r .

赵静 , 李庆丽 , 许利军 . 基于Berreman 4×4矩阵对胆甾相液晶Bragg反射带宽的模拟研究 . 液晶与显示 , 2015 . 30 ( 5 ): 777 - 783 . http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20153005.0777&graphicAbstract=0 http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20153005.0777&graphicAbstract=0 .

J ZHAO , Q L LI , L J XU . Simulation research on Bragg reflection bandwidth of cholesteric liquid crystal based on Berreman 4×4 matrix . Chin. J. Liq. Cryst. Dis. , 2015 . 30 ( 5 ): 777 - 783 . http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20153005.0777&graphicAbstract=0 http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20153005.0777&graphicAbstract=0 .

Y H HUANG , Y ZHOU , S T WU . Broadband circular polarizer using stacked chiral polymer films . Opt. Express , 2007 . 15 ( 10 ): 6414 - 6419 . DOI: 10.1364/OE.15.006414 http://doi.org/10.1364/OE.15.006414 .

H YANG , K MISHIMA , K MATSUYAMA , 等 . Thermally bandwidth-controllable reflective polarizers from (polymer network/liquid crystal/chiral dopant) composites . Appl. Phys. Lett. , 2003 . 82 ( 15 ): 2407 - 2409 . DOI: 10.1063/1.1567809 http://doi.org/10.1063/1.1567809 .

X P CUI , Q HUANG , T LIU , 等 . Pitch gradient induced by disklike chiral molecular diffusion in chiral-nematic liquid crystals . J. Appl. Phys. , 2010 . 107 ( 6 ): 063711 DOI: 10.1063/1.3326725 http://doi.org/10.1063/1.3326725 .

J KIM , H KIM , S KIM , 等 . Broadening the reflection bandwidth of polymer-stabilized cholesteric liquid crystal via a reactive surface coating layer . Appl. Opt. , 2017 . 56 ( 20 ): 5731 - 5735 . DOI: 10.1364/AO.56.005731 http://doi.org/10.1364/AO.56.005731 .

李发胜 , 王磊 , 齐琳 , 等 . 紫外吸收染料诱导的具有宽波反射特性的胆甾相液晶聚合物薄膜 . 液晶与显示 , 2011 . 26 ( 5 ): 573 - 576 . http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20112605.0573&graphicAbstract=0 http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20112605.0573&graphicAbstract=0 .

F S LI , L WANG , L QI , 等 . Ultraviolet dye induced broadband reflection in cholesteric liquid crystals polymer film . Chin. J. Liq. Cryst. Displays , 2011 . 26 ( 5 ): 573 - 576 . http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20112605.0573&graphicAbstract=0 http://cjlcd.lightpublishing.cn/thesisDetails#10.3788/YJYXS20112605.0573&graphicAbstract=0 .

D J BROER , J LUB , G N MOL . Wide-band reflective polarizers from cholesteric polymer networks with a pitch gradient . Nature , 1995 . 378 ( 6556 ): 467 - 469 . DOI: 10.1038/378467a0 http://doi.org/10.1038/378467a0 .

D J BROER , G N MOL , J A M M VAN HAAREN , 等 . Photo-induced diffusion in polymerizing chiral-nematic media . Adv. Mater. , 1999 . 11 ( 7 ): 573 - 578 . DOI: 10.1002/(SICI)1521-4095(199905)11:7<573::AID-ADMA573>3.0.CO;2-E http://doi.org/10.1002/(SICI)1521-4095(199905)11:7<573::AID-ADMA573>3.0.CO;2-E .

W HU , H Y ZHAO , L SONG , 等 . Electrically controllable selective reflection of chiral nematic liquid crystal/chiral ionic liquid composites . Adv. Mater. , 2010 . 22 ( 4 ): 468 - 472 . DOI: 10.1002/adma.200902213 http://doi.org/10.1002/adma.200902213 .

V P TONDIGLIA , L V NATARAJAN , C A BAILEY , 等 . Bandwidth broadening induced by ionic interactions in polymer stabilized cholesteric liquid crystals . Opt. Mater. Express , 2014 . 4 ( 7 ): 1465 - 1472 . DOI: 10.1364/OME.4.001465 http://doi.org/10.1364/OME.4.001465 .

K M LEE , V P TONDIGLIA , M E MCCONNEY , 等 . Color-tunable mirrors based on electrically regulated bandwidth broadening in polymer-stabilized cholesteric liquid crystals . ACS Photonics , 2014 . 1 ( 10 ): 1033 - 1041 . DOI: 10.1021/ph500259h http://doi.org/10.1021/ph500259h .

H NEMATI , S Y LIU , R S ZOLA , 等 . Mechanism of electrically induced photonic band gap broadening in polymer stabilized cholesteric liquid crystals with negative dielectric anisotropies . Soft Matter , 2015 . 11 ( 6 ): 1208 - 1213 . DOI: 10.1039/C4SM02283A http://doi.org/10.1039/C4SM02283A .

M N YU , L WANG , H NEMATI , 等 . Effects of polymer network on electrically induced reflection band broadening of cholesteric liquid crystals . J. Polym. Sci. Part B: Polym. Phys. , 2017 . 55 ( 11 ): 835 - 846 . DOI: 10.1002/polb.24317 http://doi.org/10.1002/polb.24317 .

H B LU , J L HU , Y T CHU , 等 . Cholesteric liquid crystals with an electrically controllable reflection bandwidth based on ionic polymer networks and chiral ions . J. Mater. Chem. C , 2015 . 3 ( 21 ): 5406 - 5411 . DOI: 10.1039/C5TC00730E http://doi.org/10.1039/C5TC00730E .

Q ZHANG , X M ZHANG , L YANG , 等 . Polymer-stabilised cholesteric liquid-crystals as tunable light-reflector with low operating-voltage and energy consumption . Liq. Cryst. , 2020 . 47 ( 11 ): 1655 - 1662 . DOI: 10.1080/02678292.2020.1754940 http://doi.org/10.1080/02678292.2020.1754940 .

K M LEE , V P TONDIGLIA , N P GODMAN , 等 . Blue-shifting tuning of the selective reflection of polymer stabilized cholesteric liquid crystals . Soft Matter , 2017 . 13 ( 35 ): 5842 - 5848 . DOI: 10.1039/C7SM01190C http://doi.org/10.1039/C7SM01190C .

F S LI , L WANG , W P SUN , 等 . Dye induced great enhancement of broadband reflection from polymer stabilized cholesteric liquid crystals . Polym. Adv. Technol. , 2012 . 23 ( 2 ): 143 - 148 . DOI: 10.1002/pat.1834 http://doi.org/10.1002/pat.1834 .

L P ZHANG , M WANG , L WANG , 等 . Polymeric infrared reflective thin films with ultra-broad bandwidth . Liq. Cryst. , 2016 . 43 ( 6 ): 750 - 757 . DOI: 10.1080/02678292.2016.1142013 http://doi.org/10.1080/02678292.2016.1142013 .

H KHANDELWAL , G H TIMMERMANS , M G DEBIJE , 等 . Dual electrically and thermally responsive broadband reflectors based on polymer network stabilized chiral nematic liquid crystals: the role of crosslink density . Chem. Commun. , 2016 . 52 ( 66 ): 10109 - 10112 . DOI: 10.1039/C6CC04721A http://doi.org/10.1039/C6CC04721A .

L LU , V SERGAN , P J BOS . Mechanism of electric-field-induced segregation of additives in a liquid-crystal host . Phys. Rev. E , 2012 . 86 ( 5 ): 051706 DOI: 10.1103/PhysRevE.86.051706 http://doi.org/10.1103/PhysRevE.86.051706 .

X W HU , L T DE HAAN , H KHANDELWAL , 等 . Cell thickness dependence of electrically tunable infrared reflectors based on polymer stabilized cholesteric liquid crystals . Sci. China Mater. , 2018 . 61 ( 5 ): 745 - 751 . DOI: 10.1007/s40843-017-9163-0 http://doi.org/10.1007/s40843-017-9163-0 .

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