The Structures of Self-Assembled Monolayer Films of Organosulfur Compounds Adsorbed on Gold Single Crystals: Electron Diffraction Studies.

Abstract

Transmission electron microscopy and diffraction have been used to study the packing arrangements of docosyl thiol (RSH), didocosyl sulfide (RSR), and didocosyl disulfide (RSSR) on gold single crystal foils. The specimens include gold films in (100) and (111) orientations. Docosyl thiol and didocosyl disulfide adsorbed on (111) faces assemble in coincidence lattice structures yielding hexagonal overlayers c(7 x 7) in which the short interchain distance indicates freely rotating methylene chains. On a (100) surface both alkyl groups exhibit an in-plane structure consisting of a base-centered square array in which the interchain distance implies a hindered chain movement. We have presented evidence that substrate crystallography does control the packing of monolayer alkyl sulfides adsorbed from the solution phase.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1988
Accession Number
ADA193125

Entities

People

  • George M. Whitesides
  • Lou Strong

Organizations

  • Harvard University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Alkanes
  • Cameras
  • Chemical Synthesis
  • Chemistry
  • Crystal Structure
  • Crystallography
  • Crystals
  • Diffraction
  • Electron Beams
  • Electron Diffraction
  • Electron Microscopy
  • Fatty Acids
  • Hydrocarbons
  • Materials Science
  • Orientation (Direction)
  • Scattering

Fields of Study

  • Chemistry

Readers

  • Electrochemical Surface Science
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene