Abstract:

Janus particles(JPs) are a novel type of colloid particles possessing different chemical characteristics at two hemispheres of particles. The size of JPs is usually in the micro- or nano-scale. Amphiphilic JPs have received extensive attention as novel surfactants due to the hydrophobic and hydrophilic feature shown on the two hemispheres of JPs. This paper reviews the research progress in recent years on the preparation, theory, characterization of surface activities, and the application of the amphiphilic JPs. The research interests in future are discussed.

Key words: Janus particles, Amphiphilicity, Surface activity