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Molecular Models02:00

Molecular Models

42.8K
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
42.8K
Molecular Shapes01:18

Molecular Shapes

60.0K
Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
Two regions of electron density in a diatomic...
60.0K
Ionic Crystal Structures02:42

Ionic Crystal Structures

16.2K
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...
16.2K
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

2.7K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
2.7K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

19.3K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
19.3K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

46.4K
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,...
46.4K

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関連する実験動画

Updated: Nov 23, 2025

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
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Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

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ロシア 人形 の よう な 分子 立方体

Die Liu1, Kaixiu Li2, Mingzhao Chen1

  • 1Institute of Environmental Research at Greater Bay Area; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education; Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou 510006, China.

Journal of the American Chemical Society
|December 30, 2020
PubMed
まとめ
この要約は機械生成です。

研究者は金属有機自己組み立てを用いて 大きな二重殻の超分子ケージを作りました これらのケージ内の構造はウイルスのカプシドを模倣し,分子認識と伝達アプリケーションの可能性を秘めています.

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Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

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Folding and Characterization of a Bio-responsive Robot from DNA Origami
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Folding and Characterization of a Bio-responsive Robot from DNA Origami

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関連する実験動画

Last Updated: Nov 23, 2025

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Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

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Folding and Characterization of a Bio-responsive Robot from DNA Origami
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科学分野:

  • 超分子化学
  • 材料科学
  • ナノテクノロジー

背景:

  • ナノサイズのケージ・イン・ケージ・コンパウンドは 3Dアーキテクチャです
  • ウイルスのカプシドを模倣した 超大型のケージを合成するのは 難しいことです

研究 の 目的:

  • 超分子ケージを合成する
  • 金属・有機結合体と金属イオンの 容易な自己組み立てを研究する.
  • 機能的な認識,配信,検出のためのモデルを作成します.

主な方法:

  • メタル・オーガニック・ヘクサトピック・テルピリジン・リガンドの金属イオンとの容易な自己組み立て.
  • 独占的なダブルシェル形成のために高幾何学的制約を持つ再設計されたリガンドを使用した.
  • 1H NMR,DOSY,ESI-MS,TWIM-MS,TEM,AFM,SAXSで特徴づけられる

主要な成果:

  • 二つの超分子ケージを 合成しました
  • 内立方体 (5.1 nm) と外立方体 (12.0 nmと13.2 nm) が存在する.
  • 高分子量 (75,232 と 77,667 Da) を達成し,報告されている最大の合成ケージ内の構造である.

結論:

  • リガンドの設計によって分離した二重殻構造の独占的形成が実証された.
  • 合成されたケージは 超分子材料の 優れたモデルとして機能します
  • ゲスト分子の認識,配送,検出の可能性を強調しています.