Electrical conductance of oligothiophene molecular wires.
basic_science · Level V
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- Record sourced from PubMed, PMID 18311936.
- Also identified by DOI 10.1021/nl0732023.
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Abstract
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 A (-1). The pre-exponential factor was 1.3 x 10 (-6) S, which was smaller than that observed for alkanedithiols.