Constructing an Array of Anchored Single-Molecule Rotors on Gold Surfaces

被引：116

作者：

Gao, L. ^{[1
]}

Liu, Q. ^{[1
]}

Zhang, Y. Y. ^{[1
]}

Jiang, N. ^{[1
]}

Zhang, H. G. ^{[1
]}

Cheng, Z. H. ^{[1
]}

Qiu, W. F. ^{[2
]}

Du, S. X. ^{[1
]}

Liu, Y. Q. ^{[2
]}

Hofer, W. A. ^{[3
]}

Gao, H. -J. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China

[3] Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 19期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.101.197209

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Molecular rotors with a fixed off-center rotation axis have been observed for single tetra-tert-butyl zinc phthalocyanine molecules on an Au(111) surface by a scanning tunneling microscope at LN2 temperature. Experiments and first-principles calculations reveal that we introduce gold adatoms at the surface as the stable contact of the molecule to the surface. An off-center rotation axis is formed by a chemical bonding between a nitrogen atom of the molecule and a gold adatom at the surface, which gives them a well-defined contact while the molecules can have rotation-favorable configurations. Furthermore, these single-molecule rotors self-assemble into large scale ordered arrays on Au(111) surfaces. A fixed rotation axis off center is an important step towards the eventual fabrication of molecular motors or generators.

引用

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