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関連する概念動画

Network Covalent Solids02:18

Network Covalent Solids

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Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
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Covalent Bonds01:29

Covalent Bonds

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Overview
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Covalent Bonds01:08

Covalent Bonds

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Overview
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
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Covalent Bonding and Lewis Structures02:46

Covalent Bonding and Lewis Structures

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Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons.
61.8K
Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

9.7K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
9.7K
Common Ion Effect03:24

Common Ion Effect

47.0K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
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Updated: Feb 10, 2026

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
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Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

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ポリエレクトロリトコバルント有機フレームワークにおけるイオン伝導

Qing Xu1, Shanshan Tao1, Qiuhong Jiang1

  • 1Department of Chemistry, Faculty of Science , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore.

Journal of the American Chemical Society
|May 30, 2018
PubMed
まとめ
この要約は機械生成です。

研究者は,イオン伝導性を高めるために,ポリエレクトロライトの共性有機フレームワーク (COF) を開発した. 固体電解質でのリチウムイオン輸送を大幅に促進します

さらに関連する動画

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
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Synthesis and Characterization of Functionalized Metal-organic Frameworks
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Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
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Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface

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Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
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Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

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Synthesis and Characterization of Functionalized Metal-organic Frameworks
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科学分野:

  • 材料科学
  • 電気化学
  • ナノテクノロジー

背景:

  • コヴァレント・オーガニック・フレームワーク (COF) は,イオン輸送に適した1Dチャネルを有する.
  • 裸のCOFチャネルでの限られたイオン伝導性は,固体電解質での使用を妨げています.

研究 の 目的:

  • ポリエレクトロライトコヴァレンント有機フレームワーク (COF) を オリゴ ((エチレン酸化物)) 鎖で孔壁を機能化することによって設計する.
  • COFのナノチャネル内のリチウムイオン輸送と伝導性を強化する.

主な方法:

  • COFの孔壁に柔軟なオリゴ (エチレン酸化物) 鎖を組み込む.
  • COFナノチャネル内のエンジニアリングされたポリエレクトロライトインターフェースとのリチウムイオンの複合.

主要な成果:

  • リチウムイオン複合化によるCOFナノチャネル内のポリエレクトロライトインターフェースの形成.
  • 純粋なCOFと比較して3度以上のイオン伝導性の強化.
  • 改善されたサイクルと熱的安定性を持つ車両メカニズムによるイオン運動の促進.

結論:

  • COFの1Dナノチャネルにおけるポリエレクトロライトインターフェースの設計は,固体イオン導体にとって実行可能な戦略である.
  • ポリエレクトロライトCOFは,高いイオン伝導性を有する高度な固体電解質のための有望な経路を提供します.
  • このアプローチは,高性能の固体電池と電気化学装置の開発に新しい道を開きます.