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関連する概念動画

Network Covalent Solids02:18

Network Covalent Solids

16.5K
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...
16.5K
Covalent Bonding and Lewis Structures02:46

Covalent Bonding and Lewis Structures

67.4K
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.
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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,...
12.3K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

31.6K
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...
31.6K
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

2.0K
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
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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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高放射性共性有機フレームワーク

Sasanka Dalapati1, Enquan Jin2, Matthew Addicoat3

  • 1Field of Energy and Environment, School of Materials Science, Japan Advanced Institute of Science and Technology , 1-1 Asahidai, Nomi 923-1292, Japan.

Journal of the American Chemical Society
|April 26, 2016
PubMed
まとめ
この要約は機械生成です。

研究者は,集積誘発放出 (AIE) メカニズムを使用して,集積誘発消火 (ACQ) の制限を克服して,高排出率の共性有機フレームワーク (COF) を開発しました. これらのAIE-COFは高量子収量と敏感なアンモニア検出を示しています.

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Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

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関連する実験動画

Last Updated: Mar 22, 2026

Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
08:42

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

Published on: July 10, 2017

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Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
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Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
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A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

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科学分野:

  • 材料科学
  • 超分子化学
  • ナノテクノロジー

背景:

  • 協和有機フレームワーク (COF) は,通常,集積による滅 (ACQ) に苦しんでおり,その光性能を制限している.
  • 層構造の π-π 積み重ねにより,高発光性 COF を達成することは大きな課題でした.

研究 の 目的:

  • 高排出量COFの設計のための一般的な戦略を策定する.
  • COFのACQの限界を克服するために,集積誘発排出 (AIE) メカニズムを導入します.

主な方法:

  • AIEアクティブユニットをCOF構造の頂点に統合する.
  • 周期的な π スタックされた柱状の AIE 配列を特徴とする結晶の多孔性 COF の合成.
  • 発光特性とアンモニア感知能力の特徴

主要な成果:

  • 統合されたAIEユニットで高排出量COFを成功裏に設計し,合成しました.
  • COF内の柱状のAIE π配列は,例外的な量子収量を示す,発光を支配する.
  • AIE-COFを用いて極度に敏感なアンモニアの検出を証明した.

結論:

  • 提案された戦略は,ACQに基づくCOF発光の限界を効果的に克服します.
  • この研究は,高排出量COF材料の探索と開発のための新しい道を開きます.
  • 開発されたAIE-COFは,繊細な化学センシングアプリケーションに希望を示しています.