方向結合によるイコサヘドラル準結晶の設計方法
Eva G Noya1, Chak Kui Wong2, Pablo Llombart3
1Instituto de Química Física Rocasolano, Consejo Superior de Investigaciones Científicas, CSIC, Madrid, Spain. eva.noya@iqfr.csic.es.
Nature
|August 19, 2021
まとめ
研究者らは,モデルパッチコロイドを使用して新しいイコサヘドラル準結晶 (IQC) を開発し,方向性結合を通じてその組み立てを実証した. この突破は,金属合金を超えて新しい機能的な準結晶材料の可能性を秘めています.
科学分野:
- 材料科学
- 凝縮物質物理学
- ナノテクノロジー
背景:
- イコサヘドラル準結晶 (IQC) は周期性のない長距離秩序を持っています.
- IQCは歴史的に金属合金に限定されています.
- 他の準結晶の対称性は柔らかい物質に見られますが,IQCはそうではありません.
研究 の 目的:
- モデル・パッチ・コロイドを用いた新しいIQCを導入する.
- IQCを組み立てるための合理的な設計戦略を示します.
- DNA オリガミの粒子を使って 実験的実現の可能性を探るため
主な方法:
- 粒子相互作用の設計とテストに コンピューターシミュレーションを用いた.
- 方向性結合に焦点を当てた 合理的な設計戦略を採用した.
- ボディセンターと原始IQCの両方の2つの粒子のタイプで調査されたシステム.
主要な成果:
- IQCに組み合わされる模様カロイドを成功裏に設計した.
- シミュレーションで方向性結合によって堅固な組み立てが示された.
- イコサヘドールネットワークの伝播を好む主要な粒子間相互作用の幾何学を特定した.
結論:
- モデルパッチコロイドからIQCの新型,設計可能なクラスを導入した.
- このアプローチは実験的実現の道を示し DNA オリガミを可能とする.
- 基本的なIQC物理学のモデルシステムと,機能的な準結晶材料への経路を提供します.
さらに関連する動画
06:44From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
69.3K
06:35Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
8.3K
関連する概念動画
02:42Ionic Crystal Structures
15.8K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
15.8K
02:33Lattice Centering and Coordination Number
10.4K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Types of Unit Cells
Imagine taking a large number of identical...
10.4K
02:58Crystal Field Theory - Octahedral Complexes
28.5K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
28.5K
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
45.4K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
45.4K
02:37Metallic Solids
19.7K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
19.7K
02:42Valence Bond Theory
9.9K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
9.9K