Surface wettability and spectroscopic studies on miscibility and ion adsorption of binary biomimetic self-assembled monolayers on gold surfaces

Gil Sun Lee, Tai Young Kim, Hyun Choi, Dong June Ahn

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Binary self-assembled monolayers (SAMs) have been much studied due to their high applicable potential as a model of biomimetic surfaces. However, the research about miscibility of binary SAMs has not much been investigated yet. In this work, we focused on analyzing the binary SAMs composed of mercaptohexadecanoic acid (MHA)-hexadecanthiol (HDT) on gold surfaces with Cassie equation, Israelachvili equation, and FTIR spectroscopy to confirm that the binary SAMs are well mixed. As a result, MHA-HDT binary SAMs are considered miscible because the result obtained from FTIR spectra is in good agreement with that calculated by Israelachvili equation for the case that two different molecules are well mixed on the surface. Also, the adsorption of cadmium ions on binary SAMs was confirmed by the appearance of carboxylate stretching bands.

Original languageEnglish
Pages (from-to)691-696
Number of pages6
JournalKorean Journal of Chemical Engineering
Volume26
Issue number3
DOIs
Publication statusPublished - 2009 May

Keywords

  • Binary Miscibility
  • FTIR Spectroscopy
  • Self-assembled Monolayers
  • Surface Wettability

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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