Intrinsic Visible Plasmonic Properties of Colloidal PtIn₂ Intermetallic Nanoparticles

HANDLE Open Access
  • Takekuma, Haruka
    Department of Chemistry, Graduate School of Science, Kyoto University
  • Sato, Ryota
    Institute for Chemical Research, Kyoto University
  • Iida, Kenji
    Institute for Catalysis, Hokkaido University
  • Kawawaki, Tokuhisa
    Department of Applied Chemistry, Faculty of Science, Tokyo University of Science; Research Institute for Science and Technology, Tokyo University of Science
  • Haruta, Mitsutaka
    Department of Chemistry, Graduate School of Science, Kyoto University; Institute for Chemical Research, Kyoto University
  • Kurata, Hiroki
    Institute for Chemical Research, Kyoto University
  • Nobusada, Katsuyuki
    Department of Theoretical and Computational Molecular Science, Institute for Molecular Science
  • Teranishi, Toshiharu
    Department of Chemistry, Graduate School of Science, Kyoto University; Institute for Chemical Research, Kyoto University

Abstract

Materials that intrinsically exhibit localized surface plasmon resonance (LSPR) in the visible region have been predominantly researched on nanoparticles (NPs) composed of coinage metals, namely Au, Ag, and Cu. Here, as a coinage metal-free intermetallic NPs, colloidal PtIn₂ NPs with a C1 (CaF₂-type) crystal structure are synthesized by the liquid phase method, which evidently exhibit LSPR at wavelengths similar to face-centered cubic (fcc)-Au NPs. Computational simulations pointed out differences in the electronic structure and photo-excited electron dynamics between C1-PtIn₂ and fcc-Au NPs; reduces interband transition and stronger screening with smaller number of bound d-electrons compare with fcc-Au are unique origins of the visible plasmonic nature of C1-PtIn₂ NPs. These results strongly indicate that the intermetallic NPs are expected to address the development of alternative plasmonic materials by tuning their crystal structure and composition.

Journal

Related Projects

See more

Keywords

Details 詳細情報について

  • CRID
    1050580992556440320
  • HANDLE
    2433/287355
  • ISSN
    21983844
  • Text Lang
    en
  • Article Type
    journal article
  • Data Source
    • IRDB

Report a problem

Back to top