https://scholars.lib.ntu.edu.tw/handle/123456789/409913
標題: | Role of Monomer Alkyl Chain Length in Pretilt Angle Control of Polymer-Stabilized Liquid Crystal Alignment System | 作者: | Liu, Bang Yan Meng, Ching Hsuan LI-JEN CHEN |
公開日期: | 28-九月-2017 | 卷: | 121 | 期: | 38 | 來源出版物: | Journal of Physical Chemistry C | 摘要: | © 2017 American Chemical Society. The pretilt angle of liquid crystal (LC) molecules in LC cells was manipulated by adding a mixture of two photocurable monomers, alkyl acrylate and biphenyl diacrylate, into the LCs after the UV treatment. The hexyl acrylate and octadecyl acrylate were applied to examine the alkyl chain length effect on the pretilt angle control under the condition of a fixed concentration of biphenyl diacrylate. The LC alignment was continuously adjusted from homogeneous to homeotropic alignment in the polymer-stabilized LC system by simply increasing the alkyl acrylate concentration in the LCs. At a given molar concentration of alkyl acrylate, the addition of octadecyl acrylate exhibits higher pretilt angle than that of hexyl acrylate. Both the pretilt angle of the LCs and advancing contact angle of water on the inner surfaces of LC cells simultaneously changed due to surface chemical nature and surface roughness. The pretilt angle increases along with an increase in the advancing contact angle. As a consequence, the surface advancing contact angle acts as an index for pretilt angle control. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/409913 | ISSN: | 19327447 | DOI: | https://api.elsevier.com/content/abstract/scopus_id/85030484991 10.1021/acs.jpcc.7b07160 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。