Chemical wiring and soldering toward all-molecule electronic circuitry

Yuji Okawa, Swapan K. Mandal, Chunping Hu, Yoshitaka Tateyama, Stefan Goedecker, Shigeru Tsukamoto, Tsuyoshi Hasegawa, James K. Gimzewski, Masakazu Aono

Research output: Contribution to journalArticle

74 Citations (Scopus)


Key to single-molecule electronics is connecting functional molecules to each other using conductive nanowires. This involves two issues: how to create conductive nanowires at designated positions, and how to ensure chemical bonding between the nanowires and functional molecules. Here, we present a novel method that solves both issues. Relevant functional molecules are placed on a self-assembled monolayer of diacetylene compound. A probe tip of a scanning tunneling microscope is then positioned on the molecular row of the diacetylene compound to which the functional molecule is adsorbed, and a conductive polydiacetylene nanowire is fabricated by initiating chain polymerization by stimulation with the tip. Since the front edge of chain polymerization necessarily has a reactive chemical species, the created polymer nanowire forms chemical bonding with an encountered molecular element. We name this spontaneous reaction chemical soldering. First-principles theoretical calculations are used to investigate the structures and electronic properties of the connection. We demonstrate that two conductive polymer nanowires are connected to a single phthalocyanine molecule. A resonant tunneling diode formed by this method is discussed.

Original languageEnglish
Pages (from-to)8227-8233
Number of pages7
JournalJournal of the American Chemical Society
Issue number21
Publication statusPublished - 2011 Jun 1
Externally publishedYes

ASJC Scopus subject areas

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

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  • Cite this

    Okawa, Y., Mandal, S. K., Hu, C., Tateyama, Y., Goedecker, S., Tsukamoto, S., Hasegawa, T., Gimzewski, J. K., & Aono, M. (2011). Chemical wiring and soldering toward all-molecule electronic circuitry. Journal of the American Chemical Society, 133(21), 8227-8233.