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  An NMR Study of Biomimetic Fluorapatite - Gelatine Mesocrystals

Vyalikh, A., Simon, P., Rosseeva, E., Buder, J., Scheler, U., & Kniep, R. (2015). An NMR Study of Biomimetic Fluorapatite - Gelatine Mesocrystals. Scientific Reports, 5: 15797, pp. 1-10. doi:10.1038/srep15797.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-0924-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-2633-B
Genre: Journal Article

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 Creators:
Vyalikh, Anastasia1, Author
Simon, Paul2, Author              
Rosseeva, Elena3, Author              
Buder, Jana4, Author              
Scheler, Ulrich1, Author
Kniep, Rüdiger5, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Paul Simon, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863418              
3Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
4Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
5Rüdiger Kniep, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863437              

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 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, Ca3F 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 PO43- 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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Language(s): eng - English
 Dates: 2015-10-30
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000363800400001
DOI: 10.1038/srep15797
 Degree: -

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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
 Creator(s):
null1, ???ENUM_CREATORROLE_???
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 5 Sequence Number: 15797 Start / End Page: 1 - 10 Identifier: Other: 2045-2322
CoNE: /journals/resource/2045-2322