The Langmuir-Blodgett Technique as a Tool for Homeotropic Alignment of Fluorinated Liquid Crystals Mixed with Arachidic Acid

被引：21

作者：

Modlinska, Anna ^{[1
]}

Bauman, Danuta ^{[1
]}

机构：

[1] Poznan Univ Tech, Fac Tech Phys, PL-60965 Poznan, Poland

来源：

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2011年 / 12卷 / 08期

关键词：

fluoro-substituted liquid crystal; Langmuir film; Langmuir-Blodgett film; Brewster angle microscopy; electronic absorption; FILMS; MOLECULES; BILAYER;

D O I：

10.3390/ijms12084923

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Some fluoro-substituted liquid crystals mixed with arachidic acid in monolayers formed at air-liquid (Langmuir films) and air-solid substrate (Langmuir-Blodgett films) interfaces were investigated. Molecular organization in Langmuir films was determined on the basis of the analysis of the shape of the surface pressure-mean molecular area isotherm and observations made by means of a Brewster angle microscope. It was found that in the compression process the liquid crystal molecules are pushed out towards the top of the first monolayer being in direct contact with the subphase. Langmuir films were transferred onto the quartz substrates at various surface pressures and mono-and multilayered Langmuir-Blodgett films were obtained. The films were characterized using electronic absorption measurements. The conditions for obtaining the homeotropic orientation of the liquid crystal molecules were determined.

引用

页码：4923 / 4945

页数：23

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