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Morphological control of calcium phosphate nanostructures using lyotropic liquid crystals

Wenxiao He (Institutionen för kemi- och bioteknik, Teknisk ytkemi) ; Fu Yu (Institutionen för kemi- och bioteknik) ; Martin Andersson (Institutionen för kemi- och bioteknik, Teknisk ytkemi)
Journal of Materials Chemistry B (2050-750X). Vol. 2 (2014), 21, p. 3214-3220.
[Artikel, refereegranskad vetenskaplig]

Organisms use "soft" organic compartments to control the morphology of the embedded "hard" minerals. Here we present a simple method using liquid crystal (LC) phases as "soft" and "inert" templates to prepare nanostructured calcium phosphates (CaPs), which are inorganics of known bioefficacy. Specifically, 6 nm-thick CaP nanowires and CaP sheets that precisely replicate reverse hexagonal (H-2) and lamellar (L-alpha) LCs have been successfully synthesized and we attribute this to the sufficient spatial regulation offered by the negative (H-2) or flat curvature (L-alpha) of the aqueous domain. A normal hexagonal (H-1) phase possesses a positive curvature of the aqueous domain, therefore limited spatial restriction. For this reason, precise replication of the H-1 phase by CaP has not been possible. Interestingly, the dynamic nature of the template allowed the construction of micron-sized brushite objects with a laminated structure decorating a specific facet, possibly as a result of epitaxial overgrowth of nano-sized brushite subunits. BONA F, 1993, JOURNAL OF CRYSTAL GROWTH, V131, P331



Denna post skapades 2014-07-03. Senast ändrad 2015-02-03.
CPL Pubid: 200122

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Teknisk ytkemi (2005-2014)
Institutionen för kemi- och bioteknik (2005-2014)

Ämnesområden

Yt- och kolloidkemi

Chalmers infrastruktur