Polystyrene-coated silica nanoparticles

Scheme 20 Synthesis of polystyrene-coated silica nanoparticles...

Caruso, R. A. Susha, A. Caruso, F. Multilayered Titania, Silica, and Laponite Nanoparticle Coatings on Polystyrene Colloidal Templates and Resulting Inorganic Hollow Spheres. Chem. Mater. 2001,13,400-409. 

Caruso, R.A., Susha, A. and Caruso, F., Multilayered titania, silica and laponite nanoparticle coatings on polystyrene colloidal templates and resulting inorganic hollow spheres, Chem. Mater. 13 (2001), pp. 400-409. 

The assembly was initially performed for Au Si02 with very thin shells (ca. 2 nm) on 640 nm polystyrene spheres [19] and later extended for latex cores of various sizes and gold nanoparticles coated with thicker shells. Examples of nanostructured colloids formed by assembly of Au Si02 with identical cores but silica shells with various thickness are shown in Fig. 7. It is clear that, although the surface of the particles is rough, the resultant layers are very compact... 

Kleindiest, G. Huber, C.G. Gjerde, D.T. Yengoyan, L. Bonn, G.K. Capillary electrophoresis of peptides and proteins in fused silica capillaries coated with derivatized polystyrene nanoparticles. Electrophoresis 1998,19, 262. 

The mostly used methods to monitor LbL deposition on monodisperse PS-latex particles for various substances are SPLS method and microelectrophoresis. Inorganic (magnetite, silica, titania and fluorescent quantum dots) nanoparticles [32-34], lipids [35-37] and proteins (albumin, immunoglobulin and others) [29, 38, 39] were incorporated as building block for shell formation on colloidal particles. In paper [39] the construction of enzyme multilayer films on colloidal particles for biocatalysis was demonstrated. The enzyme multilayers were assembled on submicrometer-sized polystyrene spheres via the alternate adsorption of poly(ethyleneimine) and glucose oxidase. The high surface area bio-multilayer coated particles formed were subsequently utilized in enzymatic catalysis. The step-wise coating of different lipids alternated with polyelectrolytes was performed by adsorption of preformed vesicles onto... 

R. A. Caruso, A. Susha, and F. Caruso, Multilayered titania, silica, and Laponite nanoparticle coatings on polystyrene colloidal templates and resulting inorganic hollow sphere, Chemisrry of Materials, vol. 13, no. 2, pp. 400—409, 2001. 

---