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Ion-association complexes unite classical and non-classical theories for the biomimetic nucleation of calcium phosphate

Title data

Habraken, Wouter J. E. M. ; Tao, Jinhui ; Brylka, Laura J. ; Friedrich, Heiner ; Bertinetti, Luca ; Schenk, Anna S. ; Verch, Andreas ; Dmitrovic, Vladimir ; Bomans, Paul H. H. ; Frederik, Peter M. ; Laven, Jozua ; van der Schoot, Paul ; Aichmayer, Barbara ; de With, Gijsbertus ; DeYoreo, James J. ; Sommerdijk, Nico A. J. M.:
Ion-association complexes unite classical and non-classical theories for the biomimetic nucleation of calcium phosphate.
In: Nature Communications. Vol. 4 (19 February 2013) . - Art.Nr. 1507.
ISSN 2041-1723
DOI: https://doi.org/10.1038/ncomms2490

Abstract in another language

Despite its importance in many industrial, geological and biological processes, the mechanism of crystallization from supersaturated solutions remains a matter of debate. Recent discoveries show that in many solution systems nanometre-sized structural units are already present before nucleation. Still little is known about the structure and role of these so-called pre-nucleation clusters. Here we present a combination of in situ investigations, which show that for the crystallization of calcium phosphate these nanometre-sized units are in fact calcium triphosphate complexes. Under conditions in which apatite forms from an amorphous calcium phosphate precursor, these complexes aggregate and take up an extra calcium ion to form amorphous calcium phosphate, which is a fractal of Ca2(HPO4)32− clusters. The calcium triphosphate complex also forms the basis of the crystal structure of octacalcium phosphate and apatite. Finally, we demonstrate how the existence of these complexes lowers the energy barrier to nucleation and unites classical and non-classical nucleation theories.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Juniorprofessur Kolloidale Systeme > Juniorprofessur Kolloidale Systeme - Juniorprof. Dr. Anna Schenk
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Juniorprofessur Kolloidale Systeme
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 21 Feb 2017 10:42
Last Modified: 21 Feb 2017 10:46
URI: https://eref.uni-bayreuth.de/id/eprint/36162