ИСТИНА

Metal nanoparticles are known to be good catalysts for a variety of applications. During the formation of the nanoparticles it is extremely important to avoid their aggregation into large clusters. Block copolymers forming micelles with impregnated nanoparticles have been effectively used to control the nanoparticle location and to prevent their aggregation. We report on formation of advanced highly ordered micelles formed by self-assembly of block copolymer polystyrene-block-poly(4-vinyl pyridine) in solutions in carbonic acid. These micelles could become very convenient nanoreactors for the synthesis of nanoparticles for catalysis. Carbonic acid is an advanced eco-friendly medium for the micelles formation as far as its dissolving power may be tuned by means of purely physical factors, i.e., by variation of pressure. Thereby with this promising method, we totally escape from any possible residual traces of chemical solvents in the obtained catalyst article and from the requirement of neutralization, washing out or dialysis of the acid/solvent.