Article Blue Shift of Localized Surface Plasmon Resonance of Gold Ultrathin Nanorod by Forming a Single Atomic Silver Shell via Antigalvanic Process

Subarna Maity ORCID ; Toshiki Komagata ; Shinjiro Takano ORCID ; Shinya Masuda ORCID ; Jun Kikkawa SAMURAI ORCID ; Koji Kimoto SAMURAI ORCID ; Koji Harano SAMURAI ORCID ; Tatsuya Tsukuda ORCID

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Subarna Maity, Toshiki Komagata, Shinjiro Takano, Shinya Masuda, Jun Kikkawa, Koji Kimoto, Koji Harano, Tatsuya Tsukuda. Blue Shift of Localized Surface Plasmon Resonance of Gold Ultrathin Nanorod by Forming a Single Atomic Silver Shell via Antigalvanic Process. Nano Letters. 2024, 24 (42), 13206-13212. https://doi.org/10.1021/acs.nanolett.4c03159

Description:

(abstract)

Gold ultrathin nanorods (Au UNRs) are anisotropic nanostructures constructed by attaching gold nanoclusters in one dimension. Au UNRs exhibit localized surface plasmon resonance (LSPR) only in the longitudinal direction because their diameter is smaller than the Fermi wavelength of an electron (<2 nm). In this study, we found that the LSPR wavelength of oleylamine-stabilized Au UNRs is blue shifted simply by mixing with Ag(I). High-resolution elemental mapping and X-ray photoemission spectroscopy of the resulting UNRs indicate that an Ag monoatomic layer is formed on the Au UNR surface by the antigalvanic reduction of Ag(I). This process allowed us to synthesize a series of Au@Ag core-shell UNRs with LSPR wavelengths in the range of 1.2–2.0 μm.

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  • In Copyright

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © 2024 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/acs.nanolett.4c03159

Keyword: Gold Ultrathin Nanorod, Localized Surface Plasmon Resonance, Au@Ag Core-Shell Structure, Antigalvanic Reaction

Date published: 2024-10-23

Publisher: American Chemical Society (ACS)

Journal:

  • Nano Letters (ISSN: 15306984) vol. 24 issue. 42 p. 13206-13212

Funding:

  • Ministry of Education, Culture, Sports, Science and Technology JPMXP1223UT0082
  • Core Research for Evolutional Science and Technology JPMJCR20B2
  • Japan Society for the Promotion of Science 23KF0198
  • Japan Society for the Promotion of Science JP23H04874

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4892

First published URL: https://doi.org/10.1021/acs.nanolett.4c03159

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Updated at: 2025-09-26 08:30:35 +0900

Published on MDR: 2025-09-26 08:18:15 +0900

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