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The behavior of colloidal particles with a hard core and a soft shell hasattracted the attention for researchers in the physical-chemistry interface notonly due the large number of applications, but due the unique properties ofthese systems in bulk and at interfaces. The adsorption at the boundary of twophases can provide information about the molecular arrangement. In this way, weperform Langevin Dynamics simulations of polymer-grafted nanoparticles. Weemployed a recently obtained core-softened potential to analyze the relationbetween adsorption, structure and dynamic properties of the nanoparticles neara solid repulsive surface. Two cases were considered: flat or structured walls.At low temperatures, a maxima is observed in the adsorption. It is related to afluid to clusters transition and with a minima in the contact layer diffusion -and is explained by the competition between the scales in the core-softenedinteraction. Due the long range repulsion, the particles stay at the distancecorrespondent to this length scale at low densities, and overcome the repulsivebarrier as the packing increases, However, increasing the temperature, the gainin kinetic energy allows the colloids to overcome the long range repulsionbarrier even at low densities. As consequence, there is no competition and nomaxima was observed in the adsorption.

Hard core-soft shell particles near repulsive interfaces: interplay between adsorption, aggregation and diffusion