Fine Synthesis of Nanobuilding Units and Construction of Multidimensional Structures through Their Self-Assembly

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We have established a gram-scale synthesis of monodispersed silica nanospheres, the diameter of which can be controlled below 50 nm size region. These nanospheres as colloidal dispersion can serve as excellent nanobuilding units (NBUs) in the bottom-up materials synthesis. In this study, we have developed more facile synthetic method of monodispersed silica nanospheres. Furthermore, novel NBUs having a variety of composition, shape, and interior structures are synthesized. The NBUs are self-assembled into one-, two-, or three-dimensional structures by the fine tuning of interparticle interations operated in liquid phases.