Metal ion templated polymers. Synthesis and structure of N-(4-vinylbenzyl)-1,4,7-triazacyclononane-metal complexes, polymerization of the metal-monomer complexes with divinylbenzene, and metal ion selectivity studies of the demetalated resins
- Lawrence Berkeley National Lab., CA (United States)
The selective removal of toxic metal ions from aqueous waste sites represents a new direction in environmental inorganic chemistry. We will introduce a relatively new approach in separation science: the metal ion templated polymer process entails the synthesis, metal ion complexation, and polymerization of monomer-metal complexes for selective removal of metal ion complexation, and polymerization of monomer-metal complexes for selective removal of metal ions from aqueous solution. While the concept has been reported, there is a general lack of knowledge concerning the structures of the monomer-metal complexes, the polymerization chemistry, and parameters concerning selectivity; i.e., template metal ion versus stability constants of the metal-ligand complexes in the polymer matrix. We will discuss our initial results concerning the synthesis of mono- and tris-N-(4-vinylbenzyl)-1,4,7-triazacyclononane ligands, their Zn{sup 2+} complexes, and the bulk polymerization of these Zn{sup 2+} templated monomers with a crosslinking agent, divinylbenzene. Selectivity studies with the demetalated bulk polymers for Cu{sup 2+}, Zn{sup 2+}, Ni{sup 2+}, Co{sup 2+}, Mn{sup 2+}, and Fe{sup 3+} ions will be presented.
- OSTI ID:
- 560147
- Report Number(s):
- CONF-970443--
- Country of Publication:
- United States
- Language:
- English
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