Fabrication and studies on the electric properties of highly ordered structures made from organic molecules by utilizing nano environments

1.通过纳米间隙电极测量有机分子的电学性质：为了阐明单个或少量分子的导电机制，我制作了具有10 - 100 nm间隙的纳米间隙电极。在电极之间捕获了钌配合物分子，并在不同温度下测量了其电性能，表明存在几种依赖于温度的机制.利用分子自组装技术和电子束光刻技术制备纳米间隙电极的新方法：利用分子自组装技术和电子束光刻技术，可以制备出5 ~ 20 nm的纳米间隙电极，用于制作单电子器件.大分子的制备及其在固体表面的自组装：制备了卟啉低聚物和聚合物，并控制了它们在固体表面的形貌结构.微间隙电极间金纳米粒子/有机分子组装体的制备及其电学性质研究：在微间隙电极间制备了金纳米粒子/有机分子组装体，并研究了其在不同温度下的电学性质，证明其通过分子轨道导电.碳纳米管/有机分子组装体的自组装及其电学性质研究：以碳纳米管为电极，用PCI-AFM研究了有机分子的电学性质。发现在半导体碳纳米管上分子表现出整流性质，而在金属碳纳米管上分子表现出半导体性质。

1. Electric properties of organic molecules measured by nano-gap electrodes: I have fabricated nano-gap electrodes with 10〜100 nm gaps in order to clarify the conduction mechanisms of single or small number of molecules. A ruthenium complex molecule was trapped between the electrodes and was measured the electric properties at various temperature to show that there are several mechanisms depending on the temperature.2. Development of a new method for fabricating nano-gap electrodes utilizing self assembling of molecules and electron beam lithography: By using self-assembling of molecules and electron beam lithography, nano-gap electrodes with 5 20 nm could be fabricated, which was used for making single electron devices.3. Preparation of giant molecules and their self organization on solid surfaces : Porphyrin oligomers and polymers were prepared, and their topographic structures on solid surfaces were controlled.4. Preparation of gold nano-particle / organic molecule assemblies between micro gap electrodes, and studies on their electric properties: Gold nano-particle / organic molecule assemblies were prepared between micro gap electrodes, and their electric properties were studied at various temperature to show a electric conduction through the molecular orbital.5. Self organization of carbon nanotube / organic molecule assemblies and studies on their electric properties : Electric properties of organic molecules were studied using carbon nanotubes as the electrodes and PCI-AFM. We found that on semi-conductive carbon nanotubes the molecules showed rectifying property and on metallic carbon nanotubes they showed semi-conductive properties.