期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 39, 页码 11740-11743出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201703158
关键词
biomineralization; calcium carbonate; cryo-electron microscopy; crystal growth; non-classical crystallization
资金
- University of Edinburgh
- BBSRC [BB/M029611/1]
- Wellcome Trust [WT087658]
- SULSA
- Biotechnology and Biological Sciences Research Council [BB/M029611/1] Funding Source: researchfish
- BBSRC [BB/M029611/1] Funding Source: UKRI
Early-stage reaction mechanisms for aragonite-promoting systems are relatively unknown compared to the more thermodynamically stable calcium carbonate polymorph, calcite. Using cryoTEM and SEM, the early reaction stages taking place during aragonite formation were identified in a highly supersaturated solution using an alcohol-water solvent, and an overall particle attachment growth mechanism was described for the system. In vitro evidence is provided for the solid-state transformation of amorphous calcium carbonate to aragonite, demonstrating the co-existence of both amorphous and crystalline material within the same aragonite needle. This supports non-classical formation of aragonite within both a synthetic and biological context.
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