Single-Molecule Charge Transfer and Bonding at an Organic/Inorganic Interface: Tetracyanoethylene on Noble Metals

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• 作者：Daniel Wegner ; Ryan Yamachika ; Yayu Wang ; Victor W. Brar ; Bart M. Bartlett ; Jeffrey R. Long ; Michael F. Crommie
• 刊名：Nano Letters
• 出版年：2008
• 出版时间：January 2008
• 年：2008
• 卷：8
• 期：1
• 页码：131 - 135
• 全文大小：368K
• 年卷期：v.8,no.1(January 2008)
• ISSN：1530-6992

文摘

We have studied the structural and electronic properties of tetracyanoethylene (TCNE) molecules on different noble-metal surfaces usingscanning tunneling spectroscopy and density functional theory. Striking differences are observed in the TCNE behavior on Au, Ag, and Cusubstrates in the submonolayer limit. We explain our findings by a combination of charge-transfer and lattice-matching properties for TCNEacross substrates that results in a strong variation of molecule-molecule and molecule-substrate interactions. These results have significantimplications for future organic/inorganic nanoscopic devices incorporating molecule-based magnetism.