無機-有機の枠組材料における機械的特性と化学結合の関連:単結晶ナノインデント研究
Jin Chong Tan1, Joshua D Furman, Anthony K Cheetham
1Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK.
Journal of the American Chemical Society
|September 18, 2009
まとめ
研究者は,ナノインデントと原子力顕微鏡を用いて,ハイブリッドフレームワーク材料の機械的性質を研究した. オキシラートのような固い有機リガンドは,特定の結晶の方向性において,硬さと硬さを高めます.
科学分野:
- 材料科学 材料科学とは
- クリスタログラフィーです.
- 機械工学の機械工学
背景:
- 無機・有機的なフレームワーク材料は,調節可能な特性を有しています.
- 構造と機械の行動の関係を理解することは,材料設計において極めて重要です.
研究 の 目的:
- 密度の高い無機・有機の枠組材料における機械的特性と化学的結合の関係を調査する.
- 異なる結晶学軸に沿った弾性およびプラスチック力学的反応を分離し,分析する.
主な方法:
- ナノインデンテーションと原子力顕微鏡を用いた.
- 単一結晶のCe (C) (C) (O) (O) (4) (HCO (O) (2)) の分析について) 1.
主要な成果:
- (001) 面は,硬いオックスラートリガンドで,最も高い硬さ (E ≈ 78 GPa) と硬さ (H ≈ 4.6 GPa) を示した.
- 適合型リガンドが支配する (010) 面は,最も柔らかい (E ≈ 43 GPa,H ≈ 3.9 GPa) でした.
- (100) 面に沿って,Ce-O-Ce鎖の影響を受けた中間の性質が観察されました.
結論:
- 結晶の向きと無機鎖は,機械的な強さを決定するだけではない.
- 固い有機リガンドは,特定の方向での硬さと硬さを高めるために戦略的に使用することができます.
- ハイブリッドフレームワーク材料の機械的性質は,様々な硬さの有機リガンドを組み込むことで設計することができます.
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