Article Contact Geometry Selection in the Formation Process of a Single-Molecule Junction Elucidated by Surface-Enhanced Raman Scattering Spectroscopy and I–V Measurements: Deliberate Control of Molecule–Electrode Interface for Molecular Electronics

Moe Ichikawa ; Kazuhito Tsukagoshi SAMURAI ORCID ; Tomoaki Nishino ORCID ; Satoshi Kaneko ORCID

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Moe Ichikawa, Kazuhito Tsukagoshi, Tomoaki Nishino, Satoshi Kaneko. Contact Geometry Selection in the Formation Process of a Single-Molecule Junction Elucidated by Surface-Enhanced Raman Scattering Spectroscopy and I–V Measurements: Deliberate Control of Molecule–Electrode Interface for Molecular Electronics. ACS Applied Nano Materials. 2025, 8 (27), 13620-13627. https://doi.org/10.1021/acsanm.5c00616

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(abstract)

We demonstrate the selective fabrication of two conductive states based on a formation process, focusing on the Raman shift of the CN stretching mode in 1,4-phenylene diisocyanide (PDI) SMJs, which sensitively reflects the contact geometry with which PDI is bonded to the electrode. PDI SMJ formation is studied during the breaking and making of a nanocontact. The breaking process produces a low-conductive state, while the making process generates a high-conductive state

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  • In Copyright

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Nano Materials, copyright © 2025 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsanm.5c00616.

Keyword: Single-molecule junction, formation process, interface geometry,, 1,4-phenylene diisocyanide

Date published: 2025-07-11

Publisher: American Chemical Society (ACS)

Journal:

  • ACS Applied Nano Materials (ISSN: 25740970) vol. 8 issue. 27 p. 13620-13627

Funding:

  • Japan Society for the Promotion of Science 20K05445
  • Japan Society for the Promotion of Science 22H04974
  • Hattori Hokokai Foundation
  • Murata Science and Education Foundation

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5590

First published URL: https://doi.org/10.1021/acsanm.5c00616

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Updated at: 2025-07-16 10:55:32 +0900

Published on MDR: 2026-05-01 10:24:34 +0900

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