Accession Number:

ADA282671

Title:

Nanometer Scale Phase Separation in Mixed Composition Self-Assembled Monolayers

Descriptive Note:

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF CHEMISTRY

Report Date:

1994-07-14

Pagination or Media Count:

17.0

Abstract:

Mixed composition monolayers of similar n-alkanethiols on Au111 are formed by self-assembly. While the average surface composition of these films accurately reflects the composition of the deposition solution, scanning tunneling microscopy and secondary ion mass spectroscopy measurements show that the films phase separate on the nanometer scale. Scanning tunneling microscopy has been used to follow molecular motions within these films. We discuss our observations in terms of the formation and stability of the phase segregated domains, and their potential importance in nanoscale applications.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry
  • Optics
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE