Poly(ethyleneimine) as reducing and stabilizing agent for the formation of gold nanoparticles in w/o microemulsions

摘要: Abstract This paper is focused on the use of branched poly(ethyleneimine) (PEI) as reducing well stabilizing agent for formation gold nanoparticles in different media. The process nanoparticle was investigated, absence any other agents, microemulsion template phase comparison to nucleation aqueous polymer solution. On one hand, it shown that polyelectrolyte can be used controlled single-step synthesis and stabilization via a reaction particles with an average diameter 7.1 nm produced. demonstrated also act much more complex systems, i.e. water-in-oil (w/o) droplets. reverse droplets quaternary system sodium dodecylsulfate (SDS)/toluene–pentanol (1:1)/water were successfully nanoparticles. polymer, incorporated droplets, exhibits properties, adsorbs surface prevents their aggregation. Consequently, 8.6 nm redispersed after solvent evaporation without change size. Nevertheless, acts already “template” during water microemulsion, so additional effect not observed. particle both methods checked by means UV–vis spectroscopy size distribution are investigated dynamic light scattering transmission electron microscopy (TEM).