分子テクトニクス: 孔状の電荷支援のH結合ネットワークにおける可逆的な水放出の制御
Pierre Dechambenoit1, Sylvie Ferlay, Nathalie Kyritsakas
1Laboratoire de Chimie de Coordination Organique, UMR CNRS 7140, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, F-67000 Strasbourg, France.
Journal of the American Chemical Society
|November 15, 2008
まとめ
研究者らは,ビサミジアム・テクトンと金属シアン化物アニオンを使用して,頑丈な多孔性の結晶を作り出した. これらの材料は,水素基の機能化により脱水温度が上昇し,可逆的な溶媒の吸収と放出を示す.
科学分野:
- クリスタル・エンジニアリング (Crystal Engineering) とは
- 超分子化学 超分子化学
- 材料科学 材料科学とは
背景:
- ヒドロキシル群を持つビサミジウム二酸化構造のテクトンを合成した.
- ヘクサシアンメタラートアニオン (M=Fe,Co,Cr) を利用した.
研究 の 目的:
- ビサミジウム・テクトンとヘクサシアンメタラートアニオンで頑丈な多孔性の結晶を合成する.
- 溶媒分子の放出および吸収特性を調査するために.
- 毛細な材料の脱水温度を高めるために.
主な方法:
- ビサミジウム・テクトンと[M(CN) 6−−) 2アニオンの共結晶化.
- 結晶構造を分析するための単結晶X線 difraktion.
- 分解および脱水温度を決定するための熱重力測定分析.
主要な成果:
- 240~300°Cの分解温度を持つ頑丈な多孔性の結晶の形成.
- 溶媒の放出と吸収のための単結晶から単結晶への可逆変換の観察.
- 有機構造の表面にヒドロキシル群を導入すると,脱水温度が約40°C上昇した.
結論:
- ビサミジウム・テクトンとヘクサシアンメタラートアニオンは,安定した多孔なフレームワークを形成する.
- 毛穴のある結晶は,反転可能なゲスト-ホストの相互作用を示しています.
- テクトン骨格をヒドロキシル基で機能化することで,熱安定性と脱水温度が向上します.
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