Coated colloids with tailored optical properties

Article Abstract:

A study on the preparation and characterization of polystyrene (PS) particles assembled with silica-coated gold (Au@SiO2) nanoparticles layers via the layer-by-layer (LbL) technique is presented. The optical properties of the final composite particles are dependent on the morphology of the Au- and Ag@SiO2 building units, the number of nanoparticle layers deposited, and the size of the substrates.

All Other Miscellaneous Chemical Product and Preparation Manufacturing, Chemical preparations, not elsewhere classified, Colloids, Colloids & Related Products, Usage, Nanotechnology

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Limits of the impact of gravity on self-organizing nanospheres

Article Abstract:

Drops of an aqueous suspension containing 60-nm polystyrene nanospheres were evaporated on different biomaterials to analyze the impact of gravity on the self-organization of nanospheres on substrates. The results reveal limits for the gravitational force for rings formed by nanosuspension droplets with diameters below 1 mm, the effect of normal gravitational force can be neglected.

Substrates, Aqueous solution reactions

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Comicellization of polystyrene-block-poly(ethylene oxide) with cationic and anionic surfactants in aqueous solutions: Indications and limits

Article Abstract:

The interaction of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) with cationic and anionic surfactants is studied using light scattering, sedimentation in ultracentrifuge, and (super 1)H NMR. The study shows that the addition of anionic surfactant, sodium dodecyl sulfate (SDS), to PS-b-PEO solution results in loosening the micelle cores.

Cyclic Crude and Intermediate Manufacturing, Ethylene

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