A molecular switch based on potential-induced changes of oxidation state

Fan Chen, Jin He, Colin Nuckolls, Tucker Roberts, Jennifer E. Klare, Stuart Lindsay

Research output: Contribution to journalArticle

207 Citations (Scopus)

Abstract

We have measured the conductance of a hepta-aniline oligomer attached to gold electrodes held under potential control in electrolyte. It increases fifteen-fold (to 5.3±0.4 nS) on oxidation from the leucoemeraldine form to the emeraldine salt. The single-molecule current-voltage characteristic, linear in toluene, displays negative differential resistance in an acidic electrolyte. The negative differential resistance is accounted for by modification of the local surface potential by the applied bias. These results connect electrochemical data directly to molecular electronic behavior in a two-terminal device.

Original languageEnglish (US)
Pages (from-to)503-506
Number of pages4
JournalNano Letters
Volume5
Issue number3
DOIs
StatePublished - Mar 2005

Fingerprint

Electrolytes
switches
Switches
Molecular electronics
Oxidation
oxidation
Toluene
Surface potential
Aniline
Current voltage characteristics
Oligomers
electrolytes
Gold
Salts
molecular electronics
aniline
oligomers
Electrodes
Molecules
toluene

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

A molecular switch based on potential-induced changes of oxidation state. / Chen, Fan; He, Jin; Nuckolls, Colin; Roberts, Tucker; Klare, Jennifer E.; Lindsay, Stuart.

In: Nano Letters, Vol. 5, No. 3, 03.2005, p. 503-506.

Research output: Contribution to journalArticle

Chen, F, He, J, Nuckolls, C, Roberts, T, Klare, JE & Lindsay, S 2005, 'A molecular switch based on potential-induced changes of oxidation state', Nano Letters, vol. 5, no. 3, pp. 503-506. https://doi.org/10.1021/nl0478474
Chen, Fan ; He, Jin ; Nuckolls, Colin ; Roberts, Tucker ; Klare, Jennifer E. ; Lindsay, Stuart. / A molecular switch based on potential-induced changes of oxidation state. In: Nano Letters. 2005 ; Vol. 5, No. 3. pp. 503-506.
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