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

点击翻译按钮获取中文摘要

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.