ULTRAFINE PARTICLE OF PRUSSIAN BLUE TYPE METAL COMPLEX, DISPERSION LIQUID THEREOF, AND THEIR PRODUCTION METHODS

摘要

PROBLEM TO BE SOLVED: To provide an ultrafine particle of Prussian blue type metal complex and a method of producing the same, which is excellent in dispersion stability in various types of solvent and suitable for industrial applications and commercialization, easily in large quantities and with excellent yield.

SOLUTION: In the method of producing the ultrafine particle of Prussian blue type metal complex: (A) an aqueous solution containing an anionic metal cyano complex having a metal atom M1as the central metal is mixed with an aqueous solution containing metal cations of a metal atom M2for precipitating a crystal of a Prussian blue-type metal complex having the metal atom M1and the metal atom M2; then (B) a solution obtained by dissolving a ligand L in a solvent is mixed with the crystal of the Prussian blue-type metal complex for forming a dispersion liquid of ultrafine particles of the Prussian blue-type metal complex; and (C) the Prussian blue-type metal complex is separated from the dispersion liquid as nanometer-sized ultrafine particles.

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