Accession Number:

ADA273177

Title:

Synthesis and Characterization of Two-Dimensional Molecular Recognition Interfaces

Descriptive Note:

Technical rept. 1 Aug 1992-31 Jul 1993

Corporate Author:

NEW MEXICO UNIV ALBUQUERQUE DEPT OF CHEMISTRY

Report Date:

1993-11-23

Pagination or Media Count:

23.0

Abstract:

We have used self-assembly chemistry to synthesize monolayer assemblies that function as molecular recognition interfaces. In the first part of this paper, we show that one-component self-assembled n-alkanethiol monolayers with carboxylic acid functionalized endgroups specifically adsorb vapor-phase acid-terminated molecules via hydrogen bonding or vapor-phase amine- terminate molecules via proton-transfer interactions. In the second part, we demonstrate that two-component monolayers, which consist of inert n-alkanethiol framework molecules and--defect-inducing template molecules, can discriminate between solution-phase probe molecules based on their physical and chemical characteristics. By electrochemically etching the defects and then imaging the resulting surface by scanning tunneling microscopy the defect sites can be indirectly visualized.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE