Shape and size regulation of gold nanoparticles by poly(N,N-diethylacrylamide) microgels

Abstract

We demonstrated the effect of poly(N,N-diethylacrylamide) (PDEAAm) microgels on the regulation of shape and size of gold nanoparticles (Au NPs), which were prepared by reduction of Au ion adsorbed on PDEAAm microgels. The reaction solvent used for the reduction changed the swelling state of the microgels to affect the shape of the Au NPs. In addition, the size of Au NPs could be regulated by adsorbed amount of Au ion in the microgels and the crosslinking density of the microgels.