六角形のヴァテライトの形態と構造の発達
Emilie M Pouget1, Paul H H Bomans, Archan Dey
1Laboratory of Materials and Interface Chemistry and Soft Matter CryoTEM Research Unit, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands.
Journal of the American Chemical Society
|July 31, 2010
まとめ
研究者らは,無形カルシウム炭酸が,六角形のヴァテライト結晶にどのように変容するかを明らかにした. アンモニアイオンは,この固体状態の変換を誘導し,同時に生体模倣材料の結晶の秩序と形状を発展させる.
科学分野:
- バイオミネラライゼーション
- マテリアルサイエンス 材料科学
- クリスタログラフィーです.
背景:
- バイオミメティック合成は,複雑なCaCO(3) 構造を複製することを目的としています.
- 添加物は,水晶面を選択的に阻害することによって,水晶の形状を制御します.
- CaCO ((3) 形成における無形から結晶への移行は完全に理解されていません.
研究 の 目的:
- ヴァテライト形成中の無形から結晶への移行を解明する.
- ヴァテライト結晶の成長におけるアンモニアムイオンの役割を調査する.
- 秩序と形態学の同時発展を詳細に説明する.
主な方法:
- 低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy,cryoTEM) とは,低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy,cryoTEM) とは,低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy) とは,低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy) とは,低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy,cryoTEM) とは,低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy) とは,低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy) とは,低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy) とは,低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy) とは,低温伝送電子顕微鏡 (Cryogenic transmission electron microscopy) とは,高温伝送電子顕微鏡 (Cryogenic transmission electron microscopy) とは.
- 技術には,明るいフィールドイメージング,冷凍トモグラフィー,低用量電子 difraktion,および冷凍-ダークフィールドイメージングが含まれています.
- NH (((4) ((+)) イオンの存在下でのヴァテライト結晶形成を研究した.
主要な成果:
- 六角形のヴァテライトは,無形前体相を経由して形成される.
- アモルフな相は,固体状態から結晶のヴァテライトへと変化します.
- ポリクリスタルのワテライトは,NH ((4) ((+)) 誘発の結晶平面によってテンプレートされた単一結晶に変化します.
結論:
- アンモニアムイオンは,無形カルシウム炭酸の固体状態変換を単一結晶のヴァテライトに導きます.
- この生体模倣の過程において,秩序と形態の同時に発達することが鍵となる.
- この移行を理解することで,生物鉱物化と合成結晶の成長に関する洞察が得られます.
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