杯芳烃与脂肪酸和非两亲性nematic liquid crystal混合单分子膜的比较研究
Comparative study of mixed monolayers of a calixarene with a fatty acid and a non-amphiphilic nematic liquid crystal
摘要：
许多双相液晶（NLC）缺乏极性头基，因此不能在空气/水（a/w）界面处形成稳定的单分子膜。获得这些化合物的单分子膜的一种方法是将它们掺入两亲分子的主体单层中。我们报告了杯[4]间苯二酚芳烃O-八羧基甲基化（CRO）与非两亲性NLC MBBA和两亲性硬脂酸（SA）的混合膜的比较研究。对比研究有助于更好地了解CRO-MBBA混合膜的特性。表面压力和表面电位测量的单分子膜在a/w界面，以及椭圆偏振和光谱测量转移的Langmuir-Blodgett（LB）的电影，证实MBBA添加纳入CRO膜。
英文摘要：
Many nematic liquid crystals (NLCs) lack a polar headgroup and thus are not able to form stable monolayers at the air/water (a/w) interface. A way to obtain monomolecular films of these compounds is to incorporate them into host monolayers of amphiphilic molecules. We report a comparative investigation of mixed films of Calix[4]resorcinarene O-octacarboxymethylated (CRO) with the non-amphiphilic NLC MBBA and with the amphiphilic stearic acid (SA). The comparative study is useful for a better understanding of the characteristics of the CRO-MBBA mixed films. Surface-pressure and surface-potential measurements on the monolayers at a/w interface, as well as ellipsometric and spectroscopic measurements on transferred Langmuir-Blodgett (LB) films, confirm that MBBA is additively incorporated into CRO films.
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