Synthesis of gold nanoparticles using N,N-dimethylacetoacetamide - Size and shape control by the reaction temperature

Synthesis of gold nanoparticles using N,N-dimethylacetoacetamide

  Uniform Au nanoparticles were synthesized by a simple process, mixing HAuCl₄ and N,N-dimethylacetoacetamide. These nanoparticles were characterized by UV？Vis, TEM, and EDX. N,N-dimethylacetoacetamide was effectively used as a reducing agent and stabilizing agent as well. The reaction temperature played an important role in the size-selective and shape-selective Au nanoparticle formation. The Au spherical nanoparticles obtained at room temperature had diameters of ~100 ㎚ whereas the spherical, triangle, square, and hexagonal shape mixtures were obtained at 100 ℃ with diameter range of ~20 ㎚.