Characterizing and Manipulating Individual Molecules by Scanning Tunneling Microscopy
Characterizing and Manipulating Individual Molecules by Scanning Tunneling Microscopy
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DOI：
10.1088/1674-0068/20/04/468-474
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发表时间：
2007-08
影响因子：
1
通讯作者：
Bin Li;J. Hou
中科院分区：
文献类型：
--
作者：
Bin Li;J. Hou
扫描隧道显微镜（STM）可以为我们提供表征单个分子的局部物理和化学性质的特殊手段，甚至可以帮助我们操纵单个分子构建新的分子尺度器件。本文采用两种新型的STM技术，分别对富勒烯笼中的金属原子进行了表征，并构建了具有强近藤效应的分子器件。利用空间dI/dV映射光谱揭示了Dy@C82分子的能量分辨金属笼杂化态，揭示了Dy原子在笼内的空间位置以及Dy与笼间相互作用的重要信息.利用STM针尖控制高压脉冲，使酞菁钴分子脱氢，改变其在Au（111）表面的吸附构型，从而恢复在分子完整吸附情况下消失的近藤效应。
Scanning tunneling microscopy (STM) can provide us the special means to characterize the locally physical and chemical properties of individual molecules, and even help us to manipulate the individual molecules for constructing new molecule-scale devices. Here we have adopted two new types of STM techniques to characterize the encapsulated metal atom inside a fullerene cage, and to construct a molecule-device with strong Kondo effect, respectively. The spatially dI/dV mapping spectra were used to unveil the energy-resolved metal-cage hybrid states of individual Dy@C82 molecule, and the important information about the spatial position of Dy atom inside the cage and the Dy-cage interaction was revealed. The high voltage pulse by STM tip was controlled to induce the dehydrogenation of Co phthalocyanine molecule and change its adsorption configuration on Au(111) surface, so as to recover Kondo effect that disappears in the case of intact adsorbed molecule.