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在偶氮染料子层上形成的用于液晶的反应性单体取向层的制备方法。

Process for a Reactive Monomer Alignment Layer for Liquid Crystals Formed on an Azodye Sublayer.

作者信息

Wang Junren, McGinty Colin, Reich Robert, Finnemeyer Valerie, Clark Harry, Berry Shaun, Bos Philip

机构信息

Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA.

Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, MA 02421, USA.

出版信息

Materials (Basel). 2018 Jul 12;11(7):1195. doi: 10.3390/ma11071195.

DOI:10.3390/ma11071195
PMID:30002302
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6073623/
Abstract

In this work, the detailed studies of surface polymerization stabilizing liquid crystal formed on an azodye sublayer are presented. The surface localized stabilization is obtained by free-radical polymerization of a dilute solution of a bi-functional reactive monomer (RM) in a liquid crystal (LC) solvent. To optimize the process for surface localized stabilization, we investigate the effects of several process parameters including RM concentration in LC hosts, the types of materials (either RM or LC), the photo-initiator (PI) concentration, ultra-violet (UV) polymerization intensity, and the UV curing temperature. The quality of surface localized stabilization is characterized and/or evaluated by optical microscopy, electro-optical behavior (transmission/voltage curve), the life test, and photo-bleaching. Our results show that, by carefully selecting materials, formulating mixtures, and controlling the polymerizing variables, the RM polymerization can be realized either at the surface or through the bulk. Overall, the combination of surface localized stabilization and photo-alignment offers an elegant and dynamic solution for controlling the alignment for LC, which could play a profound role in almost all liquid crystal optical devices.

摘要

在这项工作中，我们对在偶氮染料子层上形成的表面聚合稳定液晶进行了详细研究。表面局部稳定化是通过双功能反应性单体（RM）在液晶（LC）溶剂中的稀溶液进行自由基聚合获得的。为了优化表面局部稳定化工艺，我们研究了几个工艺参数的影响，包括RM在LC主体中的浓度、材料类型（RM或LC）、光引发剂（PI）浓度、紫外（UV）聚合强度和UV固化温度。表面局部稳定化的质量通过光学显微镜、电光行为（透射/电压曲线）、寿命测试和光漂白来表征和/或评估。我们的结果表明，通过仔细选择材料、配制混合物和控制聚合变量，RM聚合可以在表面或通过本体实现。总体而言，表面局部稳定化和光取向的结合为控制LC的取向提供了一种优雅而动态的解决方案，这几乎可以在所有液晶光学器件中发挥重要作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/f6cee5dbbf06/materials-11-01195-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/66a8cb557bb1/materials-11-01195-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/60584ef7aa78/materials-11-01195-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/8b639ba4f762/materials-11-01195-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/ff4bf17b977d/materials-11-01195-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/0680d8cb9e63/materials-11-01195-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/1e5d44691862/materials-11-01195-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/d5cc9b6b8184/materials-11-01195-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/64fd9b296a5b/materials-11-01195-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/ba18116a4531/materials-11-01195-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/f6cee5dbbf06/materials-11-01195-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/66a8cb557bb1/materials-11-01195-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/7f274f4b579b/materials-11-01195-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/a2dede21f2b2/materials-11-01195-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/60584ef7aa78/materials-11-01195-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/8b639ba4f762/materials-11-01195-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/ff4bf17b977d/materials-11-01195-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/0680d8cb9e63/materials-11-01195-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/1e5d44691862/materials-11-01195-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/d5cc9b6b8184/materials-11-01195-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/64fd9b296a5b/materials-11-01195-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/ba18116a4531/materials-11-01195-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c29a/6073623/f6cee5dbbf06/materials-11-01195-g012.jpg

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