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journal article·2024-03Open access

Intrinsic Visible Plasmonic Properties of Colloidal PtIn2 Intermetallic Nanoparticles

Haruka Takekuma, Ryota Sato, Kenji Iida, Tokuhisa Kawawaki, Mitsutaka Haruta, Hiroki Kurata, Katsuyuki Nobusada, Toshiharu Teranishi

Advanced Science· Volume 11· Issue 10
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Source abstract

Abstract

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.
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Research context

Metals & alloysNanomaterials

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Nonlinear Optical Materials Studies · Laser-Ablation Synthesis of Nanoparticles

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry Graduate School of Science Kyoto University Gokasho Uji Kyoto 611‐0011 Japan

Institute for Chemical Research Kyoto University Gokasho Uji Kyoto 611‐0011 Japan

Institute for Catalysis Hokkaido University N21 W10 Kita‐ku Sapporo Hokkaido 001‐0021 Japan

Department of Applied Chemistry Faculty of Science Tokyo University of Science 1‐3 Kagurazaka Shinjuku‐ku Tokyo 162‐8601 Japan

Research Institute for Science and Technology Tokyo University of Science 1‐3 Kagurazaka Shinjuku‐ku Tokyo 162‐8601 Japan

Department of Theoretical and Computational Molecular Science Institute for Molecular Science 38 Nishigonaka, Myodaiji‐cho Okazaki Aichi 444‐8585 Japan

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