Cyclic conductance switching in networks of redox-active molecular junctions

Nano Lett. 2010 Mar 10;10(3):759-64. doi: 10.1021/nl902000e.

Abstract

Redox-active dithiolated tetrathiafulvalene derivatives (TTFdT) were inserted in two-dimensional nanoparticle arrays to build interlinked networks of molecular junctions. Upon oxidation of the TTFdT to the dication state, we observed a conductance increase of the networks by up to 1 order of magnitude. Successive oxidation and reduction cycles demonstrated a clear switching behavior of the molecular junction conductance. These results show the potential of interlinked nanoparticle arrays as chemical sensors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallization / methods*
  • Electric Conductivity
  • Heterocyclic Compounds / chemistry*
  • Materials Testing
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure
  • Nanotechnology / methods*
  • Oxidation-Reduction
  • Particle Size
  • Signal Processing, Computer-Assisted*

Substances

  • Heterocyclic Compounds
  • tetrathiafulvalene