Electronic properties of a π-stacked pyrene derivative at a liquid-solid interface studied with scanning tunneling spectroscopy

Hiroshi Uji-I, Satoru Nishio, Hiroshi Fukumura

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Two kinds of self-assembled structures of 1-pyrenehexadecanoic acid at a solution-graphite interface were investigated using scanning tunneling microscopy. The pyrenyl groups of 1-pyrenehexadecanoic acid formed a π-stacked assembly when it was co-adsorbed with 4,4′-dipyridyl although the pyrenyl groups remained isolated in the one-component self-assembled structure. On the basis of the Davidov splitting model, the shift of the pyrenyl group's electronic levels, upon formation of the π-stacked assembly, was estimated from the observed structures. The energy shift was found to be consistent with the observed change in the electron-tunneling spectra between these two different structures.

Original languageEnglish
Pages (from-to)112-117
Number of pages6
JournalChemical Physics Letters
Volume408
Issue number1-3
DOIs
Publication statusPublished - 2005 Jun 7

ASJC Scopus subject areas

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

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