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Covalently Linked Protein Regulators02:04

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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.
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二次元のイミン結合コヴァレンスの有機フレームワークにおける層堆積駆動の光

Pablo Albacete, José I Martínez1, Xing Li2

  • 1Departamento de Nanoestructuras, Superficies, Recubrimientos y Astrofı́sica Molecular , Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC) , 28049 Madrid , Spain.

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まとめ

研究者は,調節可能な層の積み重ねを持つ二次元のイミンベースの共性有機フレームワーク (COF) を作成した. IMDEA-COF-1は,制御されたピレン単位の配置により,イミン結合2D-COFで初めて固体光を示している.

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科学分野:

  • 材料科学
  • 有機化学
  • 超分子化学

背景:

  • 協和有機フレームワーク (COF) は,調節可能な構造を持つ結晶性多孔ポリマーである.
  • イミン基COFはシフ凝縮反応によって合成される.
  • COFの固体性質を制御することは,その用途にとって極めて重要です.

研究 の 目的:

  • 1,6-ダイアミノピレン (DAP) とトリトピックアルデヒドを用いて新しい2Dイミン基COFを合成する.
  • これらのCOFの光特性に対する層の積み重ねの効果を調査する.
  • 固体放射のイミン関連2D-COFの最初の例を示します.

主な方法:

  • DAPと1,3,5-ベンゼントリカルアルデヒド (BTCA) または2,4,6-トリフォーミルフローログルシノール (TP) の間のシーフ凝縮反応
  • X線 difraksionのようなテクニックを使用して,結果のCOF (IMDEA-COF-1とIMDEA-COF-2) の特徴づけ.
  • 光発光スペクトロスコーピーは,放射特性を決定する.
  • 包装構造を合理化するための理論的計算

主要な成果:

  • IMDEA-COF-1とIMDEA-COF-2という2DイミンベースのCOFの形成
  • 固体状態での有意な層詰めによる光の観測.
  • 化学的設計によって達成された制御された層の積み重ね (遮蔽または分岐).
  • IMDEA-COF-1は3.5%の絶対光発光量で緑色放射を示した.
  • 理論的な計算は,観察された包装の好みを裏付けました.

結論:

  • この研究では,調節可能な固体光を持つ2Dイミンベースの2つの新しいCOFを成功裏に合成しました.
  • コントロールされた層の積み重ねは,COFで望ましい光物理的特性を達成する重要な要因です.
  • IMDEA-COF-1は,第1のイミン関連2D-COFとして,固体放射を意味する重要な進歩です.