Templating Nanocrystals with Dendrimers: A Mesoscopic Model System
Franziska Grohn, Barry J. Bauer, Eric J. Amis
Poly(amidoamine) (PAMAM) dendrimers of generation 2 to 10 are used to create organic-inorganic hybrid colloids in aqueous solution. The formation of gold colloids upon reduction of a gold salt precursor serves as model reaction to study influences on the resulting nanostructures. Characterization by transmission electron microscopy (TEM) and small angle x-ray scattering (SAXS) show that the gold particles are formed inside the dendrimer and located offset from the center. Although lower generation dendrimers aggregate when stabilizing the metal particles formed, dendrimers of generation 6 to 9 can template one gold colloid per dendrimer molecule, the size of which is controlled by the number of gold atoms added per dendrimer. For generation 10, multiple smaller gold particles per dendrimer are observed. The change from colloid stabilization by low molecular mass molecules to polymer nanotemplating with increasing molecular mass of the dendrimer is also observed for the formation of cadmium sulfide nanocrystals.
American Chemical Society: Division of Polymer Chemistry, Meeting | | | American Chemical Society (ACS)
, Bauer, B.
and Amis, E.
Templating Nanocrystals with Dendrimers: A Mesoscopic Model System, American Chemical Society: Division of Polymer Chemistry, Meeting | | | American Chemical Society (ACS), Undefined, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851653
(Accessed November 29, 2023)