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PROCESS FOR PRODUCING NANOPARTICLE OF PRUSSIAN BLUE TYPE METAL COMPLEX, PRUSSIAN BLUE TYPE METAL COMPLEX NANOPARTICLE OBTAINED BY THE SAME, DISPERSION OF THE NANOPARTICLES, METHOD OF REGULATING COLORATION OF THE NANOPARTICLES, AND ELECTRODE AND TRANSMITTED-LIGHT REGULATOR BOTH EMPLOYING THE NANOPARTICLES
PROCESS FOR PRODUCING NANOPARTICLE OF PRUSSIAN BLUE TYPE METAL COMPLEX, PRUSSIAN BLUE TYPE METAL COMPLEX NANOPARTICLE OBTAINED BY THE SAME, DISPERSION OF THE NANOPARTICLES, METHOD OF REGULATING COLORATION OF THE NANOPARTICLES, AND ELECTRODE AND TRANSMITTED-LIGHT REGULATOR BOTH EMPLOYING THE NANOPARTICLES
To provide a method of producing Prussian blue-type metal complex nanoparticles without necessarily requiring complicated steps and an excessive amount of raw materials, but allowing one to obtain nanometer-size fine particles having desired fine particle properties, and Prussian blue-type metal complex nanoparticles obtained by the method, a dispersion of the nanoparticles, a method of regulating the color of the nanoparticles, and an electrode and a transmitted light-regulator each using the nanoparticles; Prussian blue-type metal complex nanoparticles are produced by: mixing an aqueous solution containing a metal cyano complex anion having predetermined metal atom MA as a central metal and an aqueous solution containing a cation of predetermined metal atom MB; thereby precipitating the crystal of a Prussian blue-type metal complex having the metal atom MA and the metal atom MB; and then mixing the Prussian blue-type metal complex with an aqueous solution containing a metal cyano complex anion having the metal atom MC as a central metal and/or an aqueous solution containing a cation of the metal atom MD. The thus-obtained Prussian blue-type metal complex nanoparticles have a preferable electrochemical responsiveness, and the particles can be used for forming a thin film including them to construct a light-transmitted regulator.
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