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Templating Nanocrystals with Dendrimers: A Mesoscopic Model System

Published

Author(s)

Franziska Grohn, Barry J. Bauer, Eric J. Amis

Abstract

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.
Proceedings Title
American Chemical Society: Division of Polymer Chemistry, Meeting | | | American Chemical Society (ACS)
Volume
41
Issue
No. 1
Conference Dates
March 1, 2000
Conference Location
Undefined
Conference Title
Polymer Preprints

Keywords

Poly(amidoamine) (PAMAM), small angle x-ray scattering (SAXS), transmission electron microscopy (TEM)

Citation

Grohn, F. , Bauer, B. and Amis, E. (2000), 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 June 15, 2024)

Issues

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Created February 29, 2000, Updated October 12, 2021