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

Research output: Chapter in Book/Report/Conference proceedingChapter

86 Citations (Scopus)


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
Title of host publicationMolecular Wires and Electronics
Number of pages31
Publication statusPublished - 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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    Weiss, E. A., Wasielewski, M. R., & Ratner, M. A. (2005). Molecules as wires: Molecule-assisted movement of charge and energy. In Molecular Wires and Electronics (pp. 103-133). (Topics in Current Chemistry; Vol. 257).