Molecules as wires: Molecule-assisted movement of charge and energy

Emily A. Weiss, Michael R. Wasielewski*, Mark A. Ratner

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

94 Scopus citations


In this chapter, we explore experimental and theoretical aspects of molecular wire-like charge transport from the mechanistic point of view. We discuss competition between coherent superexchange and sequential mechanisms of transport through donor-bridge-acceptor systems, where the donor and acceptor are either molecules or metal/semiconductor contacts. The focus is on the two major determinants of mechanism: electronic coupling and energy level matching. Some methods of calculating conductance are outlined, and the relationship between conductance in a metal/molecule/metal junction and electron transfer, where donor and acceptor have relatively discrete electronic energy levels is explored. Finally, we give several examples of chemical systems that have displayed wire-like behavior and discuss their characterization.

Original languageEnglish (US)
Title of host publicationMolecular Wires and Electronics
Number of pages31
StatePublished - Jul 6 2005

Publication series

NameTopics in Current Chemistry
ISSN (Print)0340-1022


  • Electron transfer
  • Electronic coupling
  • Energy Transfer
  • Molecular wire
  • Superexchange

ASJC Scopus subject areas

  • Chemistry(all)


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