报告摘要：
　　Colloidal superparticles are nanoparticle assemblies in the form of colloidal particles. Assembling nanoscopic objects into meso/macroscopic complex architectures allows bottom-up fabrication of functional materials, which is essential for many nanomaterial-based technological applications. In this seminar, we will discuss the formation of superparticles with supercrystalline structures made from the self-assembly of nanoparticles with a verity of chemical compositions and with well-defined size and shapes. We will show that the self-assembly of CdSe/CdS core/shell semiconductor nanorods, mediated by shape and structural anisotropy, producesmesoscopiccolloidal superparticles having multiplewell-defined supercrystalline domains.Further, functionality-based anisotropic interactions between these CdSe/CdS nanorods can be kinetically introduced during the self-assembly and in turn yield single-domain, needle-like superparticles having parallel alignment of constituent nanorods. Unidirectional patterning of these mesoscopic needle-like superparticles gives rise to the lateral alignment of CdSe/CdS nanorods into macroscopic, uniform, freestanding polymer films that exhibit strong photoluminescence with a striking anisotropy, enabling their use as down-conversion phosphors to create polarized light-emitting diodes.