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Hollow Capsule Processing through Colloidal Templating and Self-Assembly

“…[10±15] The core is then subsequently removed by thermal [10a, 11,12] Submicron-and micron-sized hollow spheres of yttrium compounds [10a] and silica spheres, [12] and monodisperse hollow silica nanoparticles [11] have been generated by using this approach.…”

Poly(ethylene glycol)‐Graft‐Hollow Silica Vesicles for Drug Delivery

“…To prepare PEG-g-hollow silica vesicles (as shown in Scheme S1 in the Supporting Information), first, nanosized hollow silica spheres were prepared by sol-gel reaction of tetraethyl orthosilicate (TEOS) in the presence of polystyrene templates followed by removing polystyrene tem-plates under calcination at 550 8C. [25,26] From TEM images shown in Figure 1A, the average diameter and the average shell thickness of the hollow silica spheres were determined to be approximately 190 and 14 nm, respectively. The hollow silica spheres have pores with an average diameter of 1.19 nm, a surface area of 164 m 2 g, and a total pore volume of 0.24 cm 3 g; these were measured by using BET and BJH methods (graphs shown in Figure S1 in the Supporting Information).…”

Preparation, Characterization, and Application of Au-Shell/Polystyrene Beads and Au-Shell/Magnetic Beads

“…[2,12] Such ªmagnetic beadsº can be prepared chemically [2] or using layer-by-layer self-assembly. [12] We have tried various magnetic beads, including commercial magnetic beads (Dynal, Norway), ªmagnetic beadsº prepared by self-assembly, [12] and those prepared chemically in our laboratory using ion-exchange and heat treatment.…”