Application of Infrared ATR Spectroscopy to Liquid Crystals. II. Surface-induced Orientation of Nematic MBBA and Reorientation in Electric Fields
Application of Infrared ATR Spectroscopy to Liquid Crystals. II. Surface-induced Orientation of Nematic MBBA and Reorientation in Electric Fields
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红外 ATR 光谱在液晶中的应用。
DOI：
10.1246/bcsj.51.967
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
W. Suëtaka
中科院分区：
文献类型：
--
作者：
A. Hatta;H. Nohara;W. Suëtaka
偏振红外 ATR 技术用于演示向列液晶 N-(对甲氧基亚苄基)-对丁基苯胺 (MBBA) 由于电极壁和外部施加的直流电场而产生的取向。获得了作为电极的液膜 15（硅 ATR 棱镜和黄铜板之间的微米厚）上场强的函数的偏振 ATR 光谱。观察到的红外二色性揭示了硅电极表面上约 1 μm 厚的边界层中分子的平均取向。施加场之前分子的排序或堆积会影响分子对电场的响应。 引人注目的方式。详细讨论了硅电极上的分子取向。
A polarized infrared ATR technique was used to demonstrate the orientation of a nematic liquid crystal, N-(p-methoxybenzylidene)-p-butylaniline (MBBA), due to the walls of the electrode and an externally applied DC electric field. Polarized ATR spectra were obtained as a function of the field strength on liquid films 15 (μm thick between a silicon ATR prism and a brass plate serving as electrodes. The observed infrared dichroism revealed the average orientation of molecules in boundary layers about 1 μm thick on the Si electrode surface. The ordering or packing of molecules before application of the field affects the response of molecules to the electric field in a striking manner. Molecular orientations on the Si electrode are discussed in some detail.