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Superstructures of Calcium Carbonate Crystals by Oriented Attachment

Crystal Growth & Design · 2005 · Vol. 5(4) · pp. 1317–1319

Nicole Gehrke✉(Martin Luther University Halle-Wittenberg)Helmut Cölfen(Max Planck Institute of Colloids and Interfaces)Nicola Pinna(Martin Luther University Halle-Wittenberg)Markus Antonietti(Martin Luther University Halle-Wittenberg)Nadine Nassif(Max Planck Institute of Colloids and Interfaces)

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Abstract

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.

Calcium Carbonate Crystallization and Inhibition Bone Tissue Engineering Materials Chemical Synthesis and CharacterizationVateriteCalcium carbonateCrystallographyCarbonateMaterials scienceHexagonal crystal systemBiomineralizationCalciteChemical engineeringChemistry

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