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An NMR Study of Biomimetic Fluorapatite – Gelatine Mesocrystals

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Vyalikh, Anastasia, Simon, Paul, Rosseeva, Elena, Buder, Jana, Scheler, Ulrich, Kniep, Rüdiger·2015·Scientific Reports

Abstract

The mesocrystal system fluoroapatite—gelatine grown by double-diffusion is characterized by hierarchical composite structure on a mesoscale. In the present work we apply solid state NMR to characterize its structure on the molecular level and provide a link between the structural organisation on the mesoscale and atomistic computer simulations. Thus, we find that the individual nanocrystals are composed of crystalline fluorapatite domains covered by a thin boundary apatite-like layer. The latter is in contact with an amorphous layer, which fills the interparticle space. The amorphous layer is comprised of the organic matrix impregnated by isolated phosphate groups, Ca 3 F motifs and water molecules. Our NMR data provide clear evidence for the existence of precursor complexes in the gelatine phase, which were not involved in the formation of apatite crystals, proving hence theoretical predictions on the structural pre-treatment of gelatine by ion impregnation. The interfacial interactions, which may be described as the glue holding the composite materials together, comprise hydrogen bond interactions with the apatite PO 43− groups. The reported results are in a good agreement with molecular dynamics simulations, which address the mechanisms of a growth control by collagen fibers and with experimental observations of an amorphous cover layer in biominerals.

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Metadata

Authors
Vyalikh, A., Simon, P., Rosseeva, E., Buder, J., Scheler, U., & Kniep, R.
Venue
Scientific Reports
Published
2015-10-30
Volume
5
Issue
1
Pages
15797-15797
ISSN
2045-2322 (ISSN-L)
OpenAlex
W1874509609
Cited by
275
References
30
FWCI
7.20
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: An NMR Study of Biomimetic Fluorapatite – Gelatine Mesocrystals. https://app.cochat.ai/papers/10.1038/srep15797
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Vyalikh, A., Simon, P., Rosseeva, E., Buder, J., Scheler, U., & Kniep, R. (2015). An NMR Study of Biomimetic Fluorapatite – Gelatine Mesocrystals. Scientific Reports. https://doi.org/10.1038/srep15797

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