Hot-electron assisted reaction of p-nitrobenzoic acid adsorbed on metal-insulator-metal tunnel junction's electrode surface

T. Wadayama, M. Yokawa

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Surface-enhanced Raman scattering spectra of p-nitrobenzoic acid (PNBA) on the Ag electrode of a Ag/AlOx/Al tunnel junction are measured under application of a bias voltage. The bands caused by the adsorbed PNBA- at the active junction's area increase in intensity with bias voltage and a new band attributable to the azo-group emerges at voltages greater than +2.2 eV. The intensity profile of the new band is similar to the junction's Tafel plot. In contrast, the non-active electrode surface shows no change in the bands. These results indicate the tunnel junction might furnish a surface template for an anisotropic molecular structure.

Original languageEnglish
Pages (from-to)348-351
Number of pages4
JournalChemical Physics Letters
Volume428
Issue number4-6
DOIs
Publication statusPublished - 2006 Sep 20

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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