有機糸を結晶の共性有機枠に織り込む
Yuzhong Liu1, Yanhang Ma2, Yingbo Zhao1
1Department of Chemistry, University of California, Berkeley, Materials Sciences Division, Lawrence Berkeley National Laboratory, and Kavli Energy NanoSciences Institute, Berkeley, CA 94720, USA.
Science (New York, N.Y.)
|January 23, 2016
まとめ
研究者は銅のテンプレートを使用して,新しい織られた共性有機フレームワーク (COF-505) を作成しました. このユニークな構造は,金属の除去時に有意な弾性を示し,そのダイナミックな可能性を示しています.
科学分野:
- 材料科学
- 超分子化学
- 有機化学
背景:
- 協和有機フレームワーク (COF) は,様々な用途を持つ結晶性多孔ポリマーです.
- COFにおける複雑で並行しない構造的取り決めを達成することは,依然として複雑な課題です.
- COFアーキテクチャの制御にはテンプレート戦略が不可欠です.
研究 の 目的:
- 独特の織物構造を持つ新しい3次元共性有機構造 (COF-505) を合成する.
- COFアーキテクチャを指示するテンプレートとしての銅 (I) イオンの役割を調査する.
- 材料の特性,特に弾性に対する金属イオン除去の影響を探求する.
主な方法:
- イミン凝縮反応によるCOF-505の合成
- アルデヒド機能化された銅 (I) -ビスフェナントロリンテトラフローロボラート (Cu) (PDB) (BF4)) とベンジジン (BZ) を利用する.
- COFの構造の特徴と脱金属化後の弾性変化の評価
主要な成果:
- 3D COF-505の合成が成功し,ヘリキュラー状の有機糸が相互に織り交わされた.
- 銅 (I) センターはテンプレートとして機能し,並列の配置の代わりに織られたパターンを誘導しました.
- 銅の可逆的な除去と添加は,構造的な分解なしに達成された.
- COFの弾力性が10倍に増加した.
- フレームワークは,全体的な織物の構造を損なうことなく,重要な糸の柔軟性を示しました.
結論:
- COF-505は,金属イオンによってテンプレートされた新しい織られたCOFアーキテクチャを表しています.
- リバーシブルテンプレート戦略により,調節可能な材料の特性,特に弾力性が向上します.
- 糸の固有の柔軟性により ダイナミックで反応性の高い材料が作れるのです
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