Adatoms underneath Single Porphyrin Molecules on Au(111)

被引：52

作者：

Mielke, Johannes ^{[1
]}

Hanke, Felix ^{[2
,3
]}

Peters, Maike V. ^{[4
]}

Hecht, Stefan ^{[4
]}

Persson, Mats ^{[2
,3
]}

Grill, Leonhard ^{[1
,5
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, Dept Phys Chem, D-14195 Berlin, Germany

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

[3] Univ Liverpool, Dept Chem, Liverpool L69 3BX, Merseyside, England

[4] Humboldt Univ, Dept Chem, D-12489 Berlin, Germany

[5] Graz Univ, Dept Phys Chem, A-8010 Graz, Austria

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2015年 / 137卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

SCANNING TUNNELING MICROSCOPE; ORGANIC-MOLECULES; MANIPULATION; SURFACE; IDENTIFICATION; TEMPERATURE; STM; AGGREGATION; ELECTRONICS; CU(111);

D O I：

10.1021/ja510528x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption of porphyrin derivatives on a Au(111) surface was studied by scanning tunneling microscopy and spectroscopy at low temperatures in combination with density functional theory calculations. Different molecular appearances were found and could be assigned to the presence of single gold adatoms bonded by a coordination bond underneath the molecular monolayer, causing a characteristic change of the electronic structure of the molecules. Moreover, this interpretation could be confirmed by manipulation experiments of individual molecules on and off a single gold atom. This study provides a detailed understanding of the role of metal adatoms in surface-molecule bonding and anchoring and of the appearance of single molecules, and it should prove relevant for the imaging of related molecule-metal systems.

引用

页码：1844 / 1849

页数：6

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