Redox state dependence of single molecule conductivity

被引：362

作者：

Haiss, W ^{[1
]}

van Zalinge, H ^{[1
]}

Higgins, SJ ^{[1
]}

Bethell, D ^{[1
]}

Höbenreich, H ^{[1
]}

Schiffrin, DJ ^{[1
]}

Nichols, RJ ^{[1
]}

机构：

[1] Univ Liverpool, Dept Chem, Ctr Nanoscale Sci, Liverpool L69 7ZD, Merseyside, England

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2003年 / 125卷 / 50期

关键词：

D O I：

10.1021/ja038214e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Spontaneous formation of stable molecular wires between a gold scanning tunneling microscopy (STM) tip and substrate is observed when the sample has a low coverage of α,ω-dithiol molecules and the tunneling resistance is made sufficiently small. Current?distance curves taken under these conditions exhibit characteristic current plateaux at large tip?substrate separations from which the conductivity of a single molecule can be obtained. The versatility of this technique is demonstrated using redox-active molecules under potential control, where substantial reversible conductivity changes from 0.5 to 2.8 nS were observed when the molecule was electrochemically switched from the oxidized to the reduced state. Copyright © 2003 American Chemical Society.

引用

页码：15294 / 15295

页数：2

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