Preparation of DNA films showing a large anisotropic conductivity

本项目的目的是制备一种DNA定向薄膜，该薄膜沿薄膜中的DNA链显示出大的各向异性导电性。Dna被认为具有电子转移的能力，因为dna在堆叠的碱基对中有许多π电子。我们制备了DNA-脂膜，并测量了它们的电导率。在这项研究中，我们试图测量单个DNA分子作为纳米线的电导率。我们用Langmuir-Blodgett方法制备了DNA纳米线，并在荧光显微镜下观察到了排列的DNA纳米线。此外，还在交叉型微电路上测量了DNA纳米线的电子导电性。通过电导测量，我们发现DNA纳米线是良好的半导体材料(0.1-1s cm-1)。

The purpose of this project is to prepare a DNA aligned film that shows a large anisotropic conductivity along DNA strands in the film. DNA is believed to be having an ability of electron transfer, because DNA has many π-electrons within the stacked base pairs. We prepared DNA-lipid films and measured their conductivities. In this research, we tried to measure the conductivity of a single DNA molecule as a nanowire. We have prepared DNA-nanowires by using Langmuir-Blodgett method, and observed aligned DNA -nanowires by a fluorescent microscopy. Further, the electron conductivity of DNA-nanowires was also measured on an interdigitated microcuit. We found that DNA-nanowires are good semiconductor (0.1-1S cm-1) from conductivity measurements.