Surfactant aggregates at a metal surface

M. Jaschke, H. J. Butt, H. E. Gaub, S. Manne

Research output: Contribution to journalArticle

156 Scopus citations

Abstract

Surfactant adsorption on metals has been used in the past to limit the activity of electrode surfaces and to stabilize colloidal clusters in solution, but the adsorption and aggregation morphology of these surfactants has not been known. We present direct images of ionic surfactant aggregates at a gold surface in aqueous solution using atomic force microscopy. These images are generally striped in appearance as viewed from the top, indicating linear aggregates (cylindrical or half-cylindrical) lying on the substrate plane. The orientation of these aggregates is controlled either by monatomic steps on the gold surface or by the gold lattice itself, depending on the surfactant counterion.

Original languageEnglish (US)
Pages (from-to)1381-1384
Number of pages4
JournalLangmuir
Volume13
Issue number6
StatePublished - Mar 19 1997
Externally publishedYes

    Fingerprint

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Jaschke, M., Butt, H. J., Gaub, H. E., & Manne, S. (1997). Surfactant aggregates at a metal surface. Langmuir, 13(6), 1381-1384.