A molecular switch based on potential-induced changes of oxidation state

被引：248

作者：

Chen, F

He, J

Nuckolls, C

Roberts, T

Klare, JE

Lindsay, S ^{[1
]}

机构：

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

[2] Columbia Univ, Dept Chem & Biochem, New York, NY 10027 USA

[3] Columbia Univ, Dept Chem, New York, NY 10027 USA

[4] Arizona State Univ, Biodesign Inst, Tempe, AZ 85287 USA

来源：

NANO LETTERS | 2005年 / 5卷 / 03期

关键词：

D O I：

10.1021/nl0478474

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have measured the conductance of a hepta-aniline oligomer attached to gold electrodes held under potential control in electrolyte. It increases fifteen-fold (to 5.3 +/- 0.4 nS) on oxidation from the leucoemeraldine form to the emeraldine salt. The single-molecule current-voltage characteristic, linear in toluene, displays negative differential resistance in an acidic electrolyte. The negative differential resistance is accounted for by modification of the local surface potential by the applied bias. These results connect electrochemical data directly to molecular electronic behavior in a two-terminal device.

引用

页码：503 / 506

页数：4

共 26 条

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[2] Large on-off ratios and negative differential resistance in a molecular electronic device [J].