Biomimetic vaterite formation at surfaces structurally templated by oligo(glutamic acid) peptides

Previous studies have reported that the metastable vaterite phase of calcium carbonate can be stabilized in solution by acidic additives. Here we demonstrate that vaterite can also be stabilized directly at surfaces by engineered peptides. Our data show that the mineralisation occurs in a 'self...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2015-01, Vol.51 (88), p.15902-15905
Main Authors: Lu, Hao, Hood, Matthew A, Mauri, Sergio, Baio, Joe E, Bonn, Mischa, Muñoz-Espí, Rafael, Weidner, Tobias
Format: Article
Language:English
Subjects:
Additives
Backbone
Biomimetics
Calcium carbonate
Calcium Carbonate - chemical synthesis
Calcium ions
Formations
Gold - chemistry
Peptides
Photoelectron Spectroscopy
Polyglutamic Acid - chemistry
Precipitation
Surface Properties
X-Ray Absorption Spectroscopy
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Summary:Previous studies have reported that the metastable vaterite phase of calcium carbonate can be stabilized in solution by acidic additives. Here we demonstrate that vaterite can also be stabilized directly at surfaces by engineered peptides. Our data show that the mineralisation occurs in a 'self-templating' process where calcium ions restructure the peptide backbone, which in turn allows for effective vaterite precipitation.
ISSN:1359-7345
1364-548X
DOI:10.1039/c5cc05830a