Template synthesis of metal nanowires containing monolayer molecular junctions

Jeremiah K.N. Mbindyo, Thomas E. Mallouk, James B. Mattzela, Irena Kratochvilova, Baharak Razavi, Thomas N. Jackson, Theresa S. Mayer

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169 Scopus citations

Abstract

Metal nanowires containing in-wire monolayer junctions of 16-mercaptohexanoic acid were made by replication of the pores of 70 nm diameter polycarbonate track etch membranes. Au was electrochemically deposited halfway through the 6 μm long pores and a self-assembled monolayer (SAM) of 16 mercaptohexadecanoic acid was adsorbed on top. A thin layer of Au was then electrolessly grown to form a metal cap separated from the bottom part of the wire by the SAM. Electron micrographs showed that the bottom and top metal segments were separated by an approximately 2 nm thick organic monolayer. Current voltage measurements of individual nanowires confirmed that the organic monolayer could be contacted electrically on the top and bottom by the metal nanowire segments without introducing electrical short circuits that penetrate the monolayer. The values of the electrical properties for zero-bias resistance, current density, and breakdown field strength were within the ranges expected for a well-ordered alkanethiol SAM of this thickness.

Original languageEnglish (US)
Pages (from-to)4020-4026
Number of pages7
JournalJournal of the American Chemical Society
Volume124
Issue number15
DOIs
StatePublished - Apr 17 2002

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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    Mbindyo, J. K. N., Mallouk, T. E., Mattzela, J. B., Kratochvilova, I., Razavi, B., Jackson, T. N., & Mayer, T. S. (2002). Template synthesis of metal nanowires containing monolayer molecular junctions. Journal of the American Chemical Society, 124(15), 4020-4026. https://doi.org/10.1021/ja016696t