分子取向的高分辨率扫描隧道显微术(英文)

High-resolution scanning tunneling microscopy for molecular orientations

本文介绍了一种借助于扫描隧道显微镜的空间高分辨能力探测单个分子取向的方法。利用这种方法 ,我们研究了以下四种体系中的分子取向 :二维C6 0 分子阵列 ;C6 0 (1 1 1 )多层膜表面 ;吸附在Si(1 1 1 ) (7× 7)表面的C6 0 单分子 ;Au(1 1 1 )表面的硫醇自组装单分子层膜。结合局域密度近似方法理论计算 。

A new method of detecting individual molecular orientation by using high spatial resolution ability of scanning tunneling microscopy (STM) is introduced. We have used this method to study the orientational configuration of the following four molecules systems: two dimensional (2 D) C 60 molecules array; C 60 (111) multi layer film surface; C 60 adsorbed on Si(111) (7×7); alkanethiol self assembly monolayer on Au(111). In combination with the theoretical calculation using the local density of approximation, we have identified orientational configuration and order of these molecules systems.