Dendrimer Templates for the Formation of Silver Nanoparticles

In order to control the size and shape of Ag nanoparticles obtained by using poly(amidoamine) (PAMAM) dendrimer as template, the complexation between Ag+ ions and dendrimer studied extensively by UV-Vis spectroscopy and FTIR. After the Ag+/PAMAM demdrimer being reduced by direct chemical reduction, Ag (0) nanoparticles was formed, whose structure and characterization were studied by UV-Vis spectroscopy, transmission electron microscopy (TEM) and electron diffraction (ED) respectively. The results reveal that Ag nanoparticles is a kind of face center cubic crystal and its average size is 4.5?nm. The solubility and stability of the solution containing Ag nanoparticles also indicate that dendrimer is a good kind of template, as well as a protective agent.