One-Pot Colloidal Chemistry Route to Homogeneous and Doped Colloidosomes

Colloidosomes are usually produced from a series of building blocks with different sizes ranging from several nanometers to micrometers or various shapes, such as particles, microrods, and quantum dots. Colloidosomes can possess a variety of characteristics in terms of photics, electrology, mechanical strength, and selective permeability, derived from their building blocks. However, poor mechanical stability and complicated synthesis processes have limited the applications of colloidosomes. Here, we report a new one-pot colloidal chemistry route to synthesize phenol formaldehyde resin (PFR), Ag@PFR, and Au@PFR colloidosomes with high yields. The method can be modified to synthesize different kinds of doped colloidosomes with different components, which will provide a new approach to design colloidosomes with different functions

Doubly and Triply Coupled Nanowire Antennas

Nanoantenna is one of the most important optical components for light harvesting. In this study, we show experimental evidence of interactions between coupled nanowires by comparing the fluorescence properties of quantum dots on single nanowire as well as doubly and triply coupled nanowire arrays. Because of the localized surface plasmon mode, there are strong polarization dependences in this photon–plasmon–exciton conversion process. It is interesting that both the polarization-dependent enhancement and the degree of fluorescence polarization are more pronounced for triply coupled nanowires than that of doubly coupled nanowire, while the case of single nanowire is weakest. Our theoretical analysis indicates the above phenomena can be ascribed to the coupled plasmon from the nanowire antennas. Our investigations demonstrate a potential method to control the polarization of emitters using coupled nanowire arrays