Measurement of Single Molecule Conductance: Benzenedithiol and Benzenedimethanethiol

Xiaoyin Xiao, Bingqian Xu, Nongjian Tao

Research output: Contribution to journalArticlepeer-review

560 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)267-271
Number of pages5
JournalNano Letters
Issue number2
StatePublished - Feb 1 2004

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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