Polymer-supported FeIII-TAML activators: Synthesis, characterization, and applications

ANYL 64

Delia-Laura Popescu, dpopescu@andrew.cmu.edu, Nicolay V. Tsarevsky, Terrence J. Collins, tc1u@andrew.cmu.edu, and Krzysztof Matyjaszewski, km3b@andrew.cmu.edu. Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Mellon Institute, Pittsburgh, PA 15213
In attempt to improve the performance of FeIII-TAML activators (FeIII complexes of Tetra Amido Macrocyclic Ligands) and extend the areas of their application, the synthesis of activators supported on polymers with coordinating groups, such as poly(4-vinylpyridine) (poly4VP), was carried out. The binding of low-molecular weight analogues of poly4VP, namely pyridine and 4-ethylpyridine, as well as the polymer, to the FeIII-TAML complex was examined by means of cyclic voltammetry, UV-Vis and IR spectroscopy. In chloroform, the displacement of water, chloride or methyl-imidazole ligands coordinated axially to the iron center by the pyridine-based molecules was demonstrated by UV-vis spectroscopy. The influence of the nature of the axial ligand on the reactivity of the activators was investigated. Preliminary studies showed that the catalytic activity of the polymer-supported FeIII-TAMLs was similar to the soluble analogues.
 

General Papers
7:00 PM-9:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster

Division of Analytical Chemistry

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