Superstructures of Calcium Carbonate Crystals by Oriented Attachment

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GEHRKE, Nicole, Helmut CÖLFEN, Nicola PINNA, Markus ANTONIETTI, Nadine NASSIF, 2005. Superstructures of Calcium Carbonate Crystals by Oriented Attachment. In: Crystal Growth & Design. 5(4), pp. 1317-1319. ISSN 1528-7483. eISSN 1528-7505. Available under: doi: 10.1021/cg050051d

@article{Gehrke2005-07Super-40216, title={Superstructures of Calcium Carbonate Crystals by Oriented Attachment}, year={2005}, doi={10.1021/cg050051d}, number={4}, volume={5}, issn={1528-7483}, journal={Crystal Growth & Design}, pages={1317--1319}, author={Gehrke, Nicole and Cölfen, Helmut and Pinna, Nicola and Antonietti, Markus and Nassif, Nadine} }

Superstructures of Calcium Carbonate Crystals by Oriented Attachment Three-dimensional oriented attachment of CaCO<sub>3</sub> nanoparticles leads to various crystalline superstructures. This unusual mechanism enables the formation of complicated rounded structures with crystallographic orientation from nanosized building blocks, which has so far only been found for transition metal systems. This underlines the importance of nonclassical particle-based crystallization mechanisms for systems assumed to grow by ionic crystallization.<br />Crystalline hexagonal-shaped superstructures of calcium carbonate, synthesized in the presence of ammonia, are shown to be assembled by a three-dimensional oriented attachment of vaterite nanoparticles. This unusual crystallographic lock-in mechanism enables the formation of complicated rounded structures with a crystallographic orientation from nanosized building blocks, which has so far only been found for transition metal systems. 2017-09-30T13:32:26Z Pinna, Nicola eng Pinna, Nicola Gehrke, Nicole Cölfen, Helmut Gehrke, Nicole 2005-07 Nassif, Nadine Antonietti, Markus 2017-09-30T13:32:26Z Nassif, Nadine Cölfen, Helmut Antonietti, Markus

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