Solvent effect on domain formation of 4-mercaptopyridine self-assembled monolayers on Au(111) substrate by scanning tunneling microscopy

Kazuo Umemura, Katsuhiko Fujita, Takao Ishida, Masahiko Hara, Hiroyuki Sasabe, Wolfgang Knoll

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11 Citations (Scopus)

Abstract

We have studied the growth process of 4-mercaptopyridine (4-PySH) self-assembled monolayers (SAMs) on Au(111) substrate, by scanning tunneling microscopy (STM). The three factors which were investigated for the domain formation of 4-PySH were; solvent effect, immersion time dependence and the impurity effect. STM imaging revealed that the solvent effect was very significant in determining the surface morphology of the 4-PySH SAM growth, which was not observed on X-ray photoelectron spectra (XPS). These results indicated that the solvent was an important factor in the domain formation process, especially ethanol which as a typical SAM solvent, assisted the reconstruction of 4-PySH domains on the substrate.

Original languageEnglish
Pages (from-to)3620-3625
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume37
Issue number6 A
DOIs
Publication statusPublished - Jun 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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