関連する実験動画
Updated: Jun 13, 2026

09:11
Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications
Published on: March 22, 2020
中規模ゴールドクラスターの構造的進化を調査する: Au (n) (n = 27-35)
1Department of Chemistry and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA.
Journal of the American Chemical Society
|April 22, 2010
まとめ
研究者は,光電子スペクトロスコピーと理論を用いて,金塊 (Au) を研究した. 彼らは,ナノ粒子触媒の理解に不可欠な,より大きなクラスターに現れる四面体核を持つ,コア・シェル構造を発見しました.
科学分野:
- 物理化学 物理化学
- マテリアルサイエンス 材料科学
- コンピューティング・ケミストリー
背景:
- 金のクラスターの構造を理解することは,それらの触媒的応用の鍵です.
- 中規模な黄金のクラスターは,複雑な構造的進化を示しています.
研究 の 目的:
- n = 27-35 の場合,負の電荷を持つ黄金クラスター (Au(n) ((-)) の構造的進化を調査する.
- 低い位置のイソマーとグローバル最小構造を特定する.
主な方法:
- クラスター冷却のためのAr-seeded He超音速ビームを用いた光電子スペクトロスコーピー (PES).
- 密度関数理論 (DFT) は,グローバル最小検索のための計算です.
- 集積ごとに200以上の低地同位体を生成する盆地ジャンプアルゴリズム.
主要な成果:
- よく解像度の高いPESスペクトルは,低い位置の同位体を示した.
- Au (n) (n) (n = 27, 28, 30, 32-35) のコア・シェル構造を特定した.
- 一原子核,三角核,四面体核を含むクラスターサイズにより,原子核の原子数が増加することを観測した.
結論:
- テトラエドール型コアは,Au{33-35) }{-) の低層構造に多く見られる.
- 構造的洞察は,将来の化学吸収と触媒研究のための基盤を提供します.
- この研究は,中規模の黄金クラスターアニオンの構造的景観を明らかにしています.
さらに関連する動画
関連する概念動画
Additional Subnuclear Structures
The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals.
The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...
The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...
Additional Subnuclear Structures
The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals.
The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...
The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...
Atomic Structure
All matter is composed of atoms, the smallest individual units of elements. Each atom is made up of three subatomic particles: protons, neutrons, and electrons. Together, these three particles account for the mass and the charge of an atom.The History of Atomic TheoryThe first person to propose that everything on Earth is made up of tiny particles was the Greek philosopher Democritus, around 450 B.C. He used the term atomos, Greek for “indivisible,” from which the modern term “atom” is derived.
Atomic Structure
The Greek philosopher Democritus proposed that everything on Earth is made up of tiny particles called atomos, Greek for "indivisible," from which the modern term "atom" is derived. In the 19th century, John Dalton proposed the atomic theory that is still largely correct today. He put forth five postulates to explain how atoms made up the world around us. (1) All matter is composed of infinitely small particles or atoms. (2) All atoms of a given element are identical to one another and (3) are...

