Photoinduced Alignment Behaviors of a Nematic Liquid Crystal on Azobenzene Langmuir-Blodgett Monolayers

T. Seki, T. Tamaki, Ryouhei Fukuda, M. Yokoi, Hideo Hiramatsu
{"title":"Photoinduced Alignment Behaviors of a Nematic Liquid Crystal on Azobenzene Langmuir-Blodgett Monolayers","authors":"T. Seki, T. Tamaki, Ryouhei Fukuda, M. Yokoi, Hideo Hiramatsu","doi":"10.1364/shbs.1994.wd41","DOIUrl":null,"url":null,"abstract":"Trans/cis photoisomerization of azobenzene (Az) molecular films on the substrate is capable of inducing homeotropic/planar alignment changes of nematic liquid crystals (LCs). These photofunctional surfaces are called \"command surfaces.\" (Fig.1)1 The Langmuir-Blodgett (LB) technique provides importance information on the design of the surface layer. The LB film preparation condition should influence, to a large extent, the aligning behavior of the nematic LC as formerly proposed by Hiltrop and Stegemeyer.2 The present work is undertaken to elucidate the relationship between the conditions of the LB film conditions and the LC aligning behaviors. For Az LB film preparation, two sets of amphiphilic Az side chain polymers are employed, the backbone being (i) poly(vinyl alcohol) and (ii) poly(ethyleneimine). Polymeric materials are required to obtain highly photoreactive Az LB films. Single monolayers are prepared as the Az LB films throughout the investigation to avoid complexity of the film structure.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/shbs.1994.wd41","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Trans/cis photoisomerization of azobenzene (Az) molecular films on the substrate is capable of inducing homeotropic/planar alignment changes of nematic liquid crystals (LCs). These photofunctional surfaces are called "command surfaces." (Fig.1)1 The Langmuir-Blodgett (LB) technique provides importance information on the design of the surface layer. The LB film preparation condition should influence, to a large extent, the aligning behavior of the nematic LC as formerly proposed by Hiltrop and Stegemeyer.2 The present work is undertaken to elucidate the relationship between the conditions of the LB film conditions and the LC aligning behaviors. For Az LB film preparation, two sets of amphiphilic Az side chain polymers are employed, the backbone being (i) poly(vinyl alcohol) and (ii) poly(ethyleneimine). Polymeric materials are required to obtain highly photoreactive Az LB films. Single monolayers are prepared as the Az LB films throughout the investigation to avoid complexity of the film structure.
偶氮苯Langmuir-Blodgett单层上向列液晶的光致取向行为
偶氮苯(az苯)分子膜在衬底上的反/顺式光异构化能够诱导向列相液晶(LCs)的各向同性/平面排列变化。这些光功能表面被称为“指令表面”。(图1)1 Langmuir-Blodgett (LB)技术为面层的设计提供了重要信息。正如Hiltrop和stegemyer先前提出的那样,LB膜的制备条件在很大程度上影响向列型LC的对准行为。2本工作旨在阐明LB膜条件与LC对准行为之间的关系。对于Az LB薄膜的制备,采用了两组两亲性的Az侧链聚合物,主链为(i)聚乙烯醇和(ii)聚亚胺。聚合物材料需要获得高光敏性的Az LB薄膜。在整个研究过程中,为了避免薄膜结构的复杂性,制备了单层的Az LB薄膜。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信