bei Google ScholarTitelangaben
Habraken, Wouter J. E. M. ; Tao, Jinhui ; Brylka, Laura J. ; Friedrich, Heiner ; Bertinetti, Luca ; Schenk, Anna ; 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.
Bd. 4
(2013)
.
- No. 1507.
ISSN 2041-1723
DOI: https://doi.org/10.1038/ncomms2490
Abstract
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.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Kolloidale Systeme > Juniorprofessur Kolloidale Systeme - Juniorprof. Dr. Anna Schenk Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Kolloidale Systeme |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 21 Feb 2017 10:42 |
| Letzte Änderung: | 15 Feb 2023 10:17 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/36162 |