Publikation: Amorphous layer around aragonite platelets in nacre
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2005
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Proceedings of the National Academy of Sciences. 2005, 102(36), pp. 12653-12655. ISSN 0027-8424. Available under: doi: 10.1073/pnas.0502577102
Zusammenfassung
We reveal that the aragonite CaCO3 platelets in nacre of Haliotis laevigata are covered with a continuous layer of disordered amorphous CaCO3 and that there is no protein interaction with this layer. This finding contradicts classical paradigms of biomineralization, e.g., an epitaxial match between the structural organic matrix and the formed mineral. This finding also highlights the role of physicochemical effects in morphogenesis, complementing the previously assumed total control by biomolecules and bioprocesses, with many implications in nanotechnology and materials science.
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Fachgebiet (DDC)
540 Chemie
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amorphous calcium carbonate, biomineralization, high-resolution transmission EM, solid-state NMR
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NASSIF, Nadine, Nicola PINNA, Nicole GEHRKE, Markus ANTONIETTI, Christian JÄGER, Helmut CÖLFEN, 2005. Amorphous layer around aragonite platelets in nacre. In: Proceedings of the National Academy of Sciences. 2005, 102(36), pp. 12653-12655. ISSN 0027-8424. Available under: doi: 10.1073/pnas.0502577102BibTex
@article{Nassif2005-09-06Amorp-16647,
year={2005},
doi={10.1073/pnas.0502577102},
title={Amorphous layer around aragonite platelets in nacre},
number={36},
volume={102},
issn={0027-8424},
journal={Proceedings of the National Academy of Sciences},
pages={12653--12655},
author={Nassif, Nadine and Pinna, Nicola and Gehrke, Nicole and Antonietti, Markus and Jäger, Christian and Cölfen, Helmut}
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<dcterms:abstract xml:lang="eng">We reveal that the aragonite CaCO3 platelets in nacre of Haliotis laevigata are covered with a continuous layer of disordered amorphous CaCO3 and that there is no protein interaction with this layer. This finding contradicts classical paradigms of biomineralization, e.g., an epitaxial match between the structural organic matrix and the formed mineral. This finding also highlights the role of physicochemical effects in morphogenesis, complementing the previously assumed total control by biomolecules and bioprocesses, with many implications in nanotechnology and materials science.</dcterms:abstract>
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