Binding of metals with solid-support tethered PAMAM dendrimers

INOR 676

Adam P. Good, agood@usfca.edu, Lawrence D. Margerum, margeruml@usfca.edu, and Wilson Chao. Department of Chemistry, University of San Francisco, 2130 Fulton Street, San Francisco, CA 94117
The research presented takes advantage of solid-phase methodologies to rapidly construct a series of surface tethered dendrimers. Solid supports such as controlled pore glass, polystyrene beads and silica gels function as a foundation to synthesize the tethered dendrimers. Data will be presented on the ability of the attached dendrimers to extract metal ions from dilute solutions (10 ppm) as a function of dendrimer generation (size), terminal group and tether length. Equilibrium binding and subsequent analysis using AAS help identify binding capacities and binding site strength for a series of different metal ions at different pH. The data supports the hypothesis that binding capacities and selectivity for metal ions can be maximized by judicious choice of solid support, dendrimer size, structure and tether length.
 

Environmental
7:00 PM-10:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster

Sci-Mix
8:00 PM-10:00 PM, Monday, 11 September 2006 Moscone Center -- Hall D, Sci-Mix

Division of Inorganic Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006