Probing the conformation of physisorbed molecules at the atomic scale using STM manipulation

被引：48

作者：

Braun, KF ^{[1
]}

Hla, SW ^{[1
]}

机构：

[1] Ohio Univ, Dept Phys & Astron, Nanoscale & Quantum Phenomena Inst, Athens, OH 45701 USA

来源：

NANO LETTERS | 2005年 / 5卷 / 01期

关键词：

D O I：

10.1021/nl048367f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We use scanning tunneling microscope (STM) manipulation and density functional theory calculation to investigate the structural properties of individual sexiphenyl molecules physisorbed on a Ag(111) surface at 6 K. The molecule-surface atomic registry is precisely determined by using atomic markers and a sexiphenyl functionalized tip. The calculations confirm the alternating twist of the sexiphenyl pi-rings on Ag(111). The pi-ring torsional angle, 11.4degrees, is directly determined from the geometry of STM manipulation. This innovative experiment opens up a novel application of STM manipulation to probe the properties of "physisorbed" species on surfaces at the atomic level.

引用

页码：73 / 76

页数：4

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