Abstract
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.
Highlights
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
It is believed that the acidic residues of these molecules act as a molecular modulator: they display strong, preferential binding to specific mineral phases such as calcite in calcium carbonate and favour vaterite formation.[10,16,18,20]
Summary
Previous studies have reported that the metastable vaterite phase of calcium carbonate can be stabilized in solution by acidic additives. Biomimetic vaterite formation at surfaces structurally templated by oligo(glutamic acid) peptides
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