Potential induced changes in the electronic states of monolayer guanine on graphite in NaCl solution

N. J. Tao, Z. Shi

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16 Scopus citations


Monolayer guanine on graphite has been studied in NaCl solution by scanning tunneling microscopy (STM) and atomic force microscopy (AFM) as a function of the substrate potential. The STM image of the monolayer changes dramatically as the potential varies, while the AFM image shows no changes over a broad potential range. The observation indicates that the electronic states of organic films can be modified and controlled at solid-liquid interfaces, and STM can provide a local measurement of potential dependent electronic states.

Original languageEnglish (US)
Pages (from-to)L217-L223
JournalSurface Science
Issue number1-3
StatePublished - Jan 10 1994
Externally publishedYes


ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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