Omega-Terminated Alkanethiolate Monolayers on Surfaces of Copper, Silver and Gold Have Similar Wettabilities

Abstract

Long chain alkanethiols (HS(CH2)nX) adsorb from solution onto the surfaces of freshly evaporated copper, silver and gold films and form oriented monolayers. Both polar and non-polar tail groups (X) can be accommodated in these adsorptions. Adsorption on all three metals generates self-assembled monolayers (SAMs) exhibiting similar wetting properties, and thus, by inference, having related oriented structures. XPS data suggest that the omega-terminated eta-alkanethiolate monolayers, like those derived from simple alkanethiols, are composed of trans-extended chains having orientations on copper and silver that are closer to the perpendicular to the surface than are those on gold. We have prepared and characterized monolayers ( mixed monolayers ) by exposure of all three metals to mixtures of HS (CH2)11OH and HS9CH2)11CH3.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1991
Accession Number
ADA243529

Entities

People

  • George M. Whitesides
  • Paul E. Laibinis

Organizations

  • Harvard University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Adsorbates
  • Alkanes
  • Attenuation
  • Carboxylic Acids
  • Chemical Synthesis
  • Chemistry
  • Films
  • Hydrocarbons
  • Hydrophilic Properties
  • Kinetic Energy
  • Liquids
  • Materials
  • Materials Science
  • Metals
  • Monomolecular Films
  • Self Assembled Monolayers
  • Self Assembly

Readers

  • Electrochemical Surface Science
  • Statistical inference.
  • Thin Film Deposition Science.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference