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ナノポラス分子結晶内のヘムのような協調化学
C Grazia Bezzu1, Madeleine Helliwell, John E Warren
1School of Chemistry, Cardiff University, Cardiff CF10 3AT, UK.
Science (New York, N.Y.)
|March 27, 2010
まとめ
ヘムのアナログである鉄フタロシアニンは,ナノ孔質の分子結晶を形成する. これらの結晶は,単一結晶から単一結晶への変換を通じて選択的リガンド結合と溶媒除去を可能にし,血タンパク質を模倣します.
科学分野:
- クリスタル工学は,クリスタル工学です.
- 超分子化学とは
- マテリアルサイエンス 材料科学
背景:
- タンパク質のヘムモチーフは,様々な機能に不可欠ですが,合成結晶工学では十分に研究されていません.
- ナノ孔性の材料は,化学的な用途にユニークな性質を備えています.
研究 の 目的:
- ヘミの鉄フタロシアニンアナログを使用して,新しいナノ孔性の分子結晶を設計する.
- これらの結晶内のリガンド結合と構造変化を調査する.
主な方法:
- 大きな空洞を持つミリメートルスケールの鉄フタロシアニン分子結晶の合成.
- リガンド交換のための単結晶から単結晶 (SCSC) 変換.
- 構造的変化や結合現象を特徴付けるためのX線結晶学.
主要な成果:
- フタロシアニンの立方体組成の形成により,相互接続された空洞 (8 nm3) が形成されます.
- モノデント酸およびバイデント酸リガンドの選択的結合は,異なる軸部位で行われます.
- SCSCのリガンド交換と,結晶の崩壊なしに溶媒の除去の実証.
- 高い表面積 (8501000 m2/g) とN2吸収を達成しました.
結論:
- 鉄ファタロシアニン結晶は,結晶工学のためのプラットフォームとして機能し,血液タンパク質の機能を模倣します.
- SCSC変換は,ナノ孔性の材料の制御された改変を可能にします.
- これらの材料は,ガス貯蔵と触媒の潜在能力を示しています.
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