A Single-Molecule Potentiometer

被引：111

作者：

Meisner, Jeffrey S. ^{[2
]}

Kamenetska, Masha ^{[1
]}

Krikorian, Markrete ^{[2
]}

Steigerwald, Michael L. ^{[2
]}

Venkataraman, Latha ^{[1
]}

Nuckolls, Colin ^{[2
]}

机构：

[1] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

[2] Columbia Univ, Dept Chem, New York, NY USA

来源：

NANO LETTERS | 2011年 / 11卷 / 04期

基金：

美国国家科学基金会;

关键词：

Nanoscale; tunneling; break-junction; oligoene; polyene; electron-transport; ELECTRON-TRANSPORT; CONDUCTANCE; JUNCTIONS; POLYENES; CONFORMATION; FRAGMENT(S); WIRE;

D O I：

10.1021/nl104411f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Controlling electron transport through a single-molecule device is key to the realization of nanoscale electronic components A design requirement for single molecule electrical devices is that the molecule must be both structurally and electrically connected to the metallic electrodes. Typically, the mechanical and electrical contacts are achieved by the same chemical moiety. In this study, we demonstrate that the structural role may be played by one group (for example, a sulfide) while the electrical role may be played by another (a conjugated chain of C-C pi-bonds). We can specify the electrical conductance through the molecule by modulating to which particular site on the oligoene chain the electrode binds. The result is a device that functions as a potentiometer at the single-molecule level.

引用

页码：1575 / 1579

页数：5

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