Nucleation of calcium carbonate as polymorphic crystals in the presence of lipid A-diphosphate.
The well-defined structure of lipid A-diphosphate in aqueous solutions provides a way of observing the formation of calcium carbonate crystals. The crystals are either tetrahedral or rhombohedral calcite at a volume fraction of phi = 5.4 x 10 (-4) at pH 5.8 or the vaterite polymorph of CaCO(3) at a volume fraction of phi = 7.8 x 10 (-4) at pH 5.8. In both cases, nucleation, adsorption pH, and the shape-dependent template of lipid A-diphosphate control the formation of the calcite and vaterite.
Faunce
Chester A
CA
Reichelt
Hendrik
H
Paradies
Henrich H
HH
D002119:Calcium Carbonate / Q000737:chemistry*; D003460:Crystallization; D008050:Lipid A / Q000031:analogs & derivatives* / Q000737:chemistry; D008855:Microscopy, Electron, Scanning
D008050:Lipid A; C049596:diphosphoryl lipid A; D002119:Calcium Carbonate