Controlling molecular condensation/diffusion of copper phthalocyanine by local electric field induced with scanning tunneling microscope tip
Controlling molecular condensation/diffusion of copper phthalocyanine by local electric field induced with scanning tunneling microscope tip
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DOI：
10.7567/jjap.57.020301
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发表时间：
2018-02
影响因子：
1.5
通讯作者：
K. Nagaoka;S. Yaginuma;T. Nakayama
中科院分区：
文献类型：
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作者：
K. Nagaoka;S. Yaginuma;T. Nakayama
利用扫描隧道显微镜尖端诱导的脉冲电场控制了酞菁铜（CuPc）分子的凝聚/扩散现象。这种行为不能用传统的诱导偶极子模型来解释。为了了解其机理，我们用隧道光谱测量了分子的电子结构，并对分子轨道进行了理论计算。这些数据清楚地表明，由于电荷向底物转移，CuPc分子带正电荷，并且CuPc分子之间存在氢键，使得分子岛稳定。
We have discovered the condensation/diffusion phenomena of copper phthalocyanine (CuPc) molecules controlled with a pulsed electric field induced by the scanning tunneling microscope tip. This behavior is not explained by the conventional induced dipole model. In order to understand the mechanism, we have measured the electronic structure of the molecule by tunneling spectroscopy and also performed theoretical calculations on molecular orbitals. These data clearly indicate that the molecule is positively charged owing to charge transfer to the substrate, and that hydrogen bonding exists between CuPc molecules, which makes the molecular island stable.