Tip-Induced Molecule Anchoring in Ni鈥揚hthalocyanine on Au(111) Substrate

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• 作者：Yong Chan Jeong ; Sang Yong Song ; Youngjae Kim ; Youngtek Oh ; Joongoo Kang ; Jungpil Seo
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：December 10, 2015
• 年：2015
• 卷：119
• 期：49
• 页码：27721-27726
• 全文大小：459K
• ISSN：1932-7455

文摘

Pinning single molecules at desired positions can provide opportunities to fabricate bottom-up designed molecular machines. Using the combined approach of scanning tunneling microscopy and density functional theory, we report on tip-induced anchoring of Ni鈥損hthalocyanine molecules on an Au(111) substrate. We demonstrate that the tip-induced current leads to the dehydrogenation of a benzene-like ligand in the molecule, which subsequently creates chemical bonds between the molecule and the substrate. It is also found that the diffusivity of Ni鈥損hthalocyanine molecules is dramatically reduced when the molecules are anchored on the Au adatoms produced by bias pulsing. The tip-induced molecular anchoring would be readily applicable to other functional molecules that contain similar ligands.