ナノ孔質協調ポリマーの温度またはゲストによって引き起こされる急激な単結晶から単結晶への変容
Jie-Peng Zhang1, Yan-Yong Lin, Wei-Xiong Zhang
1State Key Laboratory of Photoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
Journal of the American Chemical Society
|October 13, 2005
まとめ
研究者らは,新しいナノ孔質協調ポリマーを発見し,ゲストが吸収または脱吸収されるとその構造が変化します. この材料は5倍から6倍に変換され,スマート・マテリアル・アプリケーションの可能性を秘めています.
科学分野:
- マテリアルサイエンス 材料科学
- ケミストリー 化学
- クリスタルグラフィーです.
背景:
- コーディネーションポリマーは,様々な用途を持つ結晶性材料です.
- ナノ孔質材料は,ゲスト分子の相互作用に基づいて調節可能な性質を提供します.
- 調整ポリマーの構造的変容は,反応性のある材料の開発の鍵です.
研究 の 目的:
- 新しいナノポーラースコーディネーションポリマーを合成し,特徴づけること.
- ゲストの脱吸収/吸収によって引き起こされる構造的変化を調査する.
- 協調ポリマーにおける単結晶から単結晶への変換の可能性を調査する.
主な方法:
- 単結晶X線 difraktionを用いて結晶構造を決定した.
- 熱重力測定分析 (TGA) は,ゲストの吸収解消を研究するために使用されました.
- 構造変化をモニタリングするために,可変温度粉末X線微分法 (PXRD) が使用されました.
主要な成果:
- 新しい調整ポリマーである[Ag6Cl(atz) 4].OH.6H2Oが合成されました.
- 材料は,相互に貫通したAg3 ((atz) 2の調整網を展示しています.
- 単一結晶から単一結晶への変容は,5倍から6倍の純相互浸透から,温度に誘発された変容に加えて,ゲスト脱吸収/吸収時に観察されました.
結論:
- 合成された協調ポリマーは,ゲスト分子に対する反応的行動を示しています.
- 観察された構造的変革は,相互に浸透した調整ネットワークのダイナミックな性質を強調しています.
- この材料は,ゲストセンシングおよび分離技術におけるアプリケーションの有望性を示しています.
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