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首页> 外文期刊>Applied Surface Science >Molecular organization of phospholipid monolayers on the water surface by Maxwell displacement current measurement
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Molecular organization of phospholipid monolayers on the water surface by Maxwell displacement current measurement

机译：麦克斯韦位移电流法测定水表面磷脂单层的分子结构。

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摘要

The monolayer of organic molecules at the air-water interface has been studied using the Maxwell displacement current (MDC) technique. The materials used in this study were the biological materials of phosphatidyl ethanolamine (PE) and phosphatidic acids (PA). The configuration of the experimental set-up consists of the metal/air-gap/monolayer/metal coupled with the Langmuir method. This measurement enables the detection of current without destroying the monolayer. The phase transition and molecular orientation of the phospholipid monolayers were investigated using MDC measurement without mechanical contact between electrodes and the materials. Direct evidence of phase transition from gaseous to the polar ordering phase can be obtained across phospholipid monolayers even though at very low surface pressure. Relaxation process of the phospholipid monolayers was investigated by using the step compression on the MDC signals.
机译：使用麦克斯韦位移电流（MDC）技术研究了空气-水界面处的有机分子单层。本研究中使用的材料是磷脂酰乙醇胺（PE）和磷脂酸（PA）的生物材料。实验装置的配置由金属/气隙/单层/金属与Langmuir方法耦合组成。该测量使得能够在不破坏单层的情况下检测电流。使用MDC测量研究了磷脂单层的相变和分子取向，而在电极和材料之间没有机械接触。即使在非常低的表面压力下，也可以跨磷脂单分子层获得从气相到极性有序相的相变的直接证据。通过对MDC信号进行逐步压缩，研究了磷脂单层的松弛过程。

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