Carotene as a molecular wire: Conducting atomic force microscopy

被引：207

作者：

Leatherman, G

Durantini, EN

Gust, D

Moore, TA

Moore, AL

Stone, S

Zhou, Z

Rez, P

Liu, YZ

Lindsay, SM ^{[1
]}

机构：

[1] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA

[2] Arizona State Univ, Dept Biochem & Chem, Tempe, AZ 85287 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1999年 / 103卷 / 20期

关键词：

D O I：

10.1021/jp9831278

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A conducting atomic force microscope was used to measure the electrical properties of carotenoid molecules attached to a gold electrode. The thiolated carotene molecules were embedded in insulating n-alkanethiol self-assembled monolayers. At a contact force of a few nanoNewtons, a carotenoid molecule behaves ohmically with a resistance of approximately 4.2 +/- 0.7 G Ohm; over a million times more conductive than an alkane chain of similar length. Modes of electron transport are discussed.

引用

页码：4006 / 4010

页数：5

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