Molecule-Sized Gates Based on Surface-Confined Dendrimers.

Abstract

In this report we demonstrate for the first time that surface confined-dendrimers embedded within self-assembled monolayers (SAMs) of alkylthiols can act as ion gates of molecular dimension. These composite organic thin films are conceptually, structurally, and chemically very similar to the membrane/protein composites found in nature. The key findings of this paper are that dendrimers can be well sealed within self-assembled alkylthiol monolayers and that as a function of the chemical state of the dendrimer, probe molecules can selectively and fully penetrate the dendrimer interior, exchange electrons within the dendrimer, and then diffuse back into the bulk solution. Molecular systems such as these are relevant for applications in electrocatalysis, chemical sensing, and separations.

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Document Details

Document Type
Technical Report
Publication Date
Jul 31, 1997
Accession Number
ADA328610

Entities

People

  • Hideo Tokuhisa
  • Mingqi Zhao
  • Richard M Crooks

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Waves
  • Catalysis
  • Chemistry
  • Composite Materials
  • Demographic Cohorts
  • Dendrimers
  • Electrodes
  • Electrons
  • Films
  • Mass Transfer
  • Materials
  • Molecules
  • Monomolecular Films
  • Self Assembled Monolayers
  • Surface Acoustic Waves
  • Thin Films
  • United States

Fields of Study

  • Chemistry

Readers

  • Electrochemical Surface Science
  • Nanocomposite Materials Science
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics