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タイトル: | Intrinsic Visible Plasmonic Properties of Colloidal PtIn₂ Intermetallic Nanoparticles |
著者: | Takekuma, Haruka https://orcid.org/0000-0001-8293-0655 (unconfirmed) Sato, Ryota Iida, Kenji Kawawaki, Tokuhisa Haruta, Mitsutaka Kurata, Hiroki Nobusada, Katsuyuki Teranishi, Toshiharu |
著者名の別形: | 竹熊, 晴香 佐藤, 良太 飯田, 健二 川脇, 徳久 治田, 充貴 倉田, 博基 信定, 克幸 寺西, 利治 |
キーワード: | intermetallic phase nanoparticles non-coinage metal screening effect surface plasmon resonance |
発行日: | 13-Mar-2024 |
出版者: | Wiley |
誌名: | Advanced Science |
巻: | 11 |
号: | 10 |
論文番号: | 2307055 |
抄録: | 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. |
記述: | コロイド状C1-PtIn2ナノ粒子による可視プラズモン特性の発現 --新規可視プラズモン材料としての金属間化合物ナノ粒子の設計指針--. 京都大学プレスリリース. 2024-01-12. |
著作権等: | © 2024 The Authors. Advanced Science published by Wiley-VCH GmbH This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
URI: | http://hdl.handle.net/2433/287355 |
DOI(出版社版): | 10.1002/advs.202307055 |
PubMed ID: | 38196298 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2024-01-12-3 |
出現コレクション: | 学術雑誌掲載論文等 |
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