Shape-controlled synthesis of Prussian blue analogue Co3[Co(CN)6]2 nanocrystals.

Prussian blue analogue Co3[Co(CN)6]2 nanostructures with morphologies of truncated nanocubes (polyhedra), cubes and rods, were synthesized in large quantities by a direct dissociation of the single-source precursor K3[Co(CN)6] in a microemulsion system; the molar ratio of H2O to surfactant and the concentration of K3[Co(CN)6] both played important roles in determining the shape of the product.