Electrical conductance of oligothiophene molecular wires

被引：138

作者：

Yamada, Ryo ^{[1
]}

Kumazawa, Hiroaki ^{[2
]}

Noutoshi, Tomoharu ^{[2
]}

Tanaka, Shoji ^{[3
]}

Tada, Hirokazu ^{[1
,4
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[2] Osaka Univ, Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[3] Res Ctr Mol Scale Nanosci, Inst Mol Sci, Okazaki, Aichi 4448585, Japan

[4] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3330012, Japan

来源：

NANO LETTERS | 2008年 / 8卷 / 04期

关键词：

D O I：

10.1021/nl0732023

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A break junction method using a scanning tunneling microscope has been applied to electrical conductance measurement of newly designed oligothiophene molecules terminated with a thiocyanate group. The tunneling conduction was evident from an exponential decay of the conductance as a function of the molecular length up to ca. 6 nm. The tunneling decay constant was estimated to be 0.1 angstrom(-1). The pre-exponential factor was 1.3 x 10(-6) S, which was smaller than that observed for alkanedithiols.

引用

页码：1237 / 1240

页数：4

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