1,3-Diamino-2-hydroxypropane-N,N,N′,N′-tetraacetic acid stabilized amorphous calcium carbonate: nucleation, transformation and crystal growth

被引：122

作者：

Cai, Guo-Bin ^{[1
]}

Chen, Shao-Feng ^{[1
]}

Liu, Lei ^{[1
]}

Jiang, Jun ^{[1
]}

Yao, Hong-Bin ^{[1
]}

Xu, An-Wu ^{[1
]}

Yu, Shu-Hong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Div Nanomat & Chem, Hefei Natl Lab Phys Sci Microscale, Dept Chem, Hefei 230026, Peoples R China

来源：

CRYSTENGCOMM | 2010年 / 12卷 / 01期

基金：

美国国家科学基金会;

关键词：

HYDROPHILIC BLOCK-COPOLYMERS; RAY-ABSORPTION SPECTROSCOPY; SINGLE-CRYSTALS; NONCLASSICAL CRYSTALLIZATION; DENATURED COLLAGEN; BIOMIMETIC GROWTH; TRANSIENT PHASE; CACO3; PRECURSOR; BIOMINERALIZATION;

D O I：

10.1039/b911426m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A low molecular weight organic molecule, 1,3-diamino-2-hydroxypropane-N,N,N',N'-tetraacetic acid, has been found that it could stabilize amorphous calcium carbonate (ACC) for at least three days in a gas diffusion reaction, also it could control the formation of hierarchical calcite crystals. The transformation process from ACC to calcite crystals has been systematically studied. Nucleation sites and intermediates were both captured by time-dependent experiments. It is found that ACC could form a close packed film on the substrate and part of the nucleation occurred on the film. After nucleation, another form of ACC conglomeration was found to be dissolved from inside. The intermediates on the substrate were found to be composed of fibres. A rod-dumbbell-sphere transformation phenomenon was observed. Selective adsorption and the mesocrystal transformation mechanism are assumed to play a key role in the formation of intermediates with different shapes and structures.

引用

页码：234 / 241

页数：8

共 60 条

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