POLY 11 |
| Polymeric metal complexes feature site-isolated metals in well-defined polymer environments. They can be prepared by different synthetic routes using elements from different parts of the periodic table as illustrated by boron main group, iron transition metal and europium lanthanide complexes with dibenzoylmethane polylactide (dbmPLA) macroligands. Boron polymers made via a hydroxyl-functionalized boron initiator using tin octoate as the catalyst are light emitting materials with impressive optical properties relevant for imaging and sensing. Iron tris(dbmPLA) is formed from iron metalloinitiators and lactide monomer without the tin reagent, since Fe tris(dbm) centers themselves serve as built-in polymerization catalysts. Iron dbm materials exhibit acid sensitive two-stage degradation, at the metal center and along the polymer backbone. Luminescent europium systems, on the other hand, are made via chelation of dbmPLA macroligands to europium ions. Recent advances in the study of dibenzoylmethane metallobiomaterials will be presented. |
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Metal-Containing and Metallo-Supramolecular Polymers and Materials
8:20 AM-11:35 AM, Sunday, August 19, 2007 Westin Boston Waterfront -- Stone, Oral
Division of Polymer Chemistry |