Synthesis and Self-Assembly of Particles
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概要
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This review provides wet chemical synthetic methods for micrometer-sized polymer particles with low polydispersity, highly monodisperse silica particles and functional composite particles such as fluorescent polymer particles, magnetic polymer particles and magnetic silica particles. The micrometersized polymer particles were synthesized in surfactant-free polymerization with amphoteric initiator. The silica particles were prepared by Stöber method with basic catalysts such as ammonia and amine. It is found that electrostatic interaction between particles is the important factor for controlling particle size distributions in both synthetic methods. The electrostatic interaction was controlled in the preparation of functional composite particles. Affinity between the component materials in a composite particle was improved with coupling agents for both methods. Monodisperse polystyrene and silica particles in different sizes were used to fabricate two-dimensionally ordered structures of the particles. A simple dip-coating method could be applied to the fabrication of various double-layered particle arrays including a honeycomb structure of silica particles under the monolayer of hexagonally arranged polystyrene particles.
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