Syntheses and Applications of Multi-Colored Functional Nanoparticles and Their Dispersion Solutions

Abstract

We have developed high-performance functional materials on the basis of coordination chemistry and nanoscience. Due to their increased specific surface areas nanoparticles (NPs) show fascinating properties not seen with their bulk forms. Using the specific surface activity of NPs, novel functionalities have been discovered. In this report, we have focused on surface-modification and surface-nanoarchitecture of Prussian blue (PB) and its analog NPs, printed-electronics electrodes made of Ag NPs via the drastic melting-drop phenomenon, and efficient photoelectric conversion systems using the plasmon effect of Ag NPs. We succeeded in color-tuning of dispersion solutions of the PB NPs, in a simple, high-yield, low-cost, environmentally friendly, and large-scale synthesis of Ag NPs, and in fabrication of the plasmon-enhanced photoelectron-generation systems due to optimized combination between colored Ag NPs and organic dyes.