Colloidal Rings by Site‐Selective Growth on Patchy Colloidal Disc Templates

Abstract

Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

Confinement Assembly of ABC Triblock Terpolymers for the High-Yield Synthesis of Janus Nanorings

“…32,33 Plasmid DNA was used as monodisperse circular template to confine the self-assembly of block copolymer micelles into homogeneous core-shell nanorings. 34 Other confining templates such as surfactant micelles, 35 DNA origami, 36 and 2D interfaces, 37 have aided the formation of various inorganic nanorings, [37][38][39][40] which then served as model systems to study shape-depended plasmon resonance, [41][42][43] or surface-enhanced Raman scattering. 44 Nanorings have further shown promise in photodynamic therapy, 45 as well as cancer therapy due to the higher uptake of circular shapes into cells as compared to disks and slower released rate as compared to spheres.…”

“…rings with different chemistry on inside and outside (high and low curvature). 12,40 Due to lack of concepts to create anisotropic surfaces, studies involving nanorings usually focused on shape effects. [1][2][3][4] In recent years, particles with anisotropic or patchy surfaces have gained increased attention as they display distinctly different properties than isotropic surfaces including directionality, non-closed packing, and enhanced affinity to interfaces (or other particles).…”

Anisotropic Hexagonal Particles Induced by the Double-Solvent Swelling Method

“…On the other hand, based on the preassembled colloidal arrays, the posttreatment approaches have also been studied to prepare largescale nonspherical particles. For example, the golf-like, 18,19 spaceship-like, 20 coral-like, 21 disc-like, 22,23 and polyhedron particles 24 have been fabricated successfully through the postmodification methods. In most cases, these previously reported approaches only focus on true-sphere particles and the close-packed particle arrays based on true spheres.…”

Capillary Force Driving Directional 1D Assembly of Patchy Colloidal Discs

“…As shown in Figure 1a, patchy PS discs we employed have two types of surfaces, one is the top and bottom surfaces, which are covered by a thin layer of liquid decane, and stabilized by polyvinylpyrrolidone (PVP), and another is the side surface, which is not wetted by decane. 34 The decane patches contain the dissolved poly(2-ethylhexyl methacrylate) (PEHMA). These PS discs are dynamically stable due to the adsorbed PVP and thus they do not spontaneously self-assemble into chains or other complex structures during stirring.…”

“…Due to the phase separation, the side surfaces of PS discs are not covered by PEHMA so that they are not wetted by decane. 34 The droplets are stabilized by PVP. The dissolved PEHMA is 28.6 wt % by an NMR analysis (Figure S2).…”