Band structure engineering of a molecular wire system composed of dimercaptoacetoamidobenzene, its derivatives, and gold clusters

M. Nolan, J. A. Larsson, J. C. Greer

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

The properties of molecular devices can be engineered through modification of the conformation of the molecule and through chemical substitution. The following study presents the results of density functional theory studies of the properties of a metal-molecule assembly resulting from the interaction between an organic molecular linker, dimercaptoacetoamidobenzene and thirteen atom "magic number" gold nanoclusters. Bonding between two gold nanoclusters, changing the conformation of the linker molecule and the effect of chemical substitution in the linker are assessed through considering the geometry and electronic structure of the resulting assemblies. Changing the conformation in the molecule leads to significant changes in the electronic structure of the metal-linker-metal complex. Chemical substitution in the molecular wire also has an effect on the electronic structure; however, energy level shifts are larger for conformational changes than for chemical substitution.

Original languageEnglish
Pages (from-to)166-174
Number of pages9
JournalComputational Materials Science
Volume27
Issue number1-2
DOIs
Publication statusPublished - 12 Feb 2003
EventE-MRS 2002, Symposium A - Strasbourg, France
Duration: 18 Jun 200221 Jun 2002

Keywords

  • Energy levels
  • Gold clusters
  • Molecular wire

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