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Letter

Measurement of Single Molecule Conductance: Benzenedithiol and Benzenedimethanethiol

Xiaoyin Xiao, Bingqian Xu, and Nongjian J. Tao*

The Center for Solid State Electronics Research, Arizona State University, Tempe, Arizona 85287

Nano Letters, 2004, 4 (2), pp 267–271

DOI: 10.1021/nl035000m

Publication Date (Web): January 14, 2004

Corresponding author. E-mail: nongjian.tao@asu.edu

Abstract

We have studied electron transport properties of benzenedithiol and benzenedimethanethiol covalently bonded to gold electrodes by repeatedly creating a large number of molecular junctions. For each molecule, conductance histogram shows peaks at integer multiples of a fundamental conductance value, which is used to identify the conductance of a single molecule. The conductance values of a benzenedithiol and benzenedimethanethiol are 0.011 G₀ and 0.0006 G₀ (G₀ = 2e²/h), respectively. The conductance peaks are broad, which reflects variations in the microscopic details of different molecular junctions. We have also studied electrochemical gate effect.

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Published In Issue February 11, 2004
Received November 9, 2003
Revised Manuscript Received December 8, 2003

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Letter

Measurement of Single Molecule Conductance: Benzenedithiol and Benzenedimethanethiol

Abstract

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Recommend & Share

Related Content

Single-Molecule Circuits with Well-Defined Molecular Conductance

Conductance of Single Alkanedithiols: Conduction Mechanism and Effect of Molecule−Electrode Contacts Conductance of Single Alkanedithiols: Conduction Mechanism and Effect of Molecule−Electrode Contacts

Amine−Gold Linked Single-Molecule Circuits: Experiment and Theory

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