Issue 38, 2010

BaCO3 mesocrystals: new morphologies using peptide–polymer conjugates as crystallization modifiers

Abstract

Nanocrystal superstructures of barium carbonate (BaCO3) which exhibit unusual morphologies are obtained by the carbon dioxide vapor diffusion technique in the presence of poly(ethylene oxide)-block-eicosa aspartate (PEO-b-Asp20). The highly effective bioconjugate acts as a crystal growth modifier over a broad range of concentrations. Instead of commonly observed branched needles, the morphology can be systematically varied along different twinned growth patterns towards well-defined branched dumbbells. Detailed analysis of the crystal substructures with high resolution scanning electron microscopy (HRSEM) and dynamic light scattering (DLS) discloses a potential growth mechanism of the superstructures and reveals the role of the polymeric bioconjugate therein.

Graphical abstract: BaCO3 mesocrystals: new morphologies using peptide–polymer conjugates as crystallization modifiers

Supplementary files

Article information

Article type
Paper
Submitted
08 Jun 2010
Accepted
03 Aug 2010
First published
28 Aug 2010

Phys. Chem. Chem. Phys., 2010,12, 11984-11992

BaCO3 mesocrystals: new morphologies using peptidepolymer conjugates as crystallization modifiers

T. Wang, J. Mitchell, H. Börner, H. Cölfen and M. Antonietti, Phys. Chem. Chem. Phys., 2010, 12, 11984 DOI: 10.1039/C0CP00819B

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