INVESTIGATION ON ANALYSIS OF NANO-DIELECTRIC AND ELECTRONIC INTERFACIAL PHENOMENA IN ORGANIC MOLECULAR FILM BY MAXWELL-DISPLACEMENT-CURRENT MEASUREMENT AND FABRICATION OF CONFORMATIONAL MOLECULAR MEMORY

本研究的目的是阐明有机单层膜的介电和电子性质，并将其应用于构象分子存储器。因此，这项研究已经进行的麦克斯韦位移电流测量的研究人员提出的想法的基础上。研究人员使用棒状极性分子模型分析了有机单层膜的分子运动，假设分子的运动受玻尔兹曼统计的支配。他们从理论上推导出了单层的介电常数，并分析了有机单层的相变，考虑到极性分子和水表面之间的相互作用以及组成分子的电排斥相互作用。为了阐明有机膜的界面静电行为，研究人员还使用Kelvin-Probe方法，并开发了一种用于确定静电空间电荷分布的方法， 关于我们 研究了偶氮苯分子构象变化引发液晶取向转变的过程以及偶氮苯分子在混合单分子层体系中的运动。主要研究结果如下：（1）有机单分子膜的介电常数、弛豫时间等物理化学性质可以用棒状极性分子模型进行分析。(2)单分子膜的相变，如Sa-Sc转变，可以用棒状极性分子模型来分析。(3)得到了热刺激电流的一般表达式。(4)利用沉积的有机分子膜的数目与表面电位之间的关系，可以确定金属/膜界面和膜/膜界面上纳米量级的空间分布。实验分别对聚酰亚胺LB膜、聚酰亚胺LB膜和酞菁膜进行了电绝缘、半导体功能化处理。(5)电子态密度的分布可以由表面势的温度依赖性来确定。在这项研究中使用的有机薄膜聚酰亚胺和酞菁。(6)空间电荷在界面处的存在取决于金属和有机分子的种类。(7)分析了考虑界面效应的分子膜二极管的I-V特性。(8)取向转变过程可以通过偶氮苯表面单分子膜的顺反光致异构化来控制。基于连续介质理论分析了液晶分子的运动，并通过同时测量液晶分子的光透过率和电容来研究液晶分子的运动。少

The purpose of this investigation was to clarify the dielectric and electronic properties of organic monolayer films, and applied them to conformational molecular memory. Thus, this investigation has been carried out on the basis of the idea of Maxwell-displacement current measurement proposed by the investigators. The investigators analyzed the molecular motion of organic monolayer films using a rod-like polar molecular model, assuming the motion of molecules is ruled by the Boltzmann statistics. They theoretically derived a dielectric constant of monolayers and also analyzed the phase transition of organic monolayers, taking into account the interaction working between polar molecules and water surface as well as the electric repulsive interaction working the constituent molecules. To clarify the interfacial electrostatic behavior of organic films, the investigators also used the Kelvin-Probe method and developed a method for determining the electrostatic space charge distribution at … More the molecular-film/electrode interface, as well as for determining the Distribution of the Electronic Density of States.Orientational transition process of LCs triggered by conformational change of azobenzene and the molecular motion of azobenzenes in mixed monolayer systems were examined. The results were summarized as follows : (1) The physico-chemical properties of organic monolayers such as dielectric constant, relaxation time can be analyzed using a rod-like polar molecular model. (2) Phase transition of monolayers, such as Sa-Sc transition, can be analyzed using a rod-like polar molecular model. (3) The generalized formula of thermally stimulated current was obtained. (4) Spatial distribution at the metal/film interface and film/film interface can be determined on the order of nano-meter scale by using the relationship between the number of deposited organic molecular films and the surface potentials. Experiments ware performed for electrically insulating Polyimide LB films and semiconducting functionalized PI LB films and phthalocyanine films. (5) Distribution of the Electronic Density of states can be determined from the temperature dependence of the surface potentials. Organic films used in this study were polyimide and phthalocyanines. (6) Spatial charges exit at the interface depending on the kinds of metals and the organic molecules. (7) The I-V characteristic of molecular-film diodes was analyzed taking into account the interfacial phenomena. (8) The orientational transition process could be controlled by the cis-trans photoisomerization of surface azobenzene monolayers. The motion of LC molecules was analyzed based on a continum theory, and the motion of LCs could be examined by a simultaneous measurement of optical transmittance and the capacitance. Less