Multifunctional Janus particles composed of inorganic nanoparticles through emulsion confined assembly

) of the AuNRs@PS and P4VP solutions. Furthermore, the obtained Janus particles with AuNR head have a peak absorbance of around 800 nm, which can be applied in photothermal therapy. Additionally, multifunctionality can be achieved by reducing nanoparticle (NP) precursors on a prefabricated scaffold of P4VP or co-assembling P4VP-tethered NPs with AuNRs@PS building blocks. These multifunctional Janus particles hold great potential for applications in micro/nanomotors, catalysts, and biological materials.