High Temperature Resistant Organic/Inorganic Hybrid Polymers: An Architectural Study
Rept. for 10 Jul 2003-9 Jan 2007
CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MACROMOLECULAR SCIENCE
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This project addressed the development of a new class of metalorganic supramolecular polymers, which are prepared by the self-assembly of ditopic ligands and appropriate metal ions. The ditopic ligand consists of two 2,6-bis1-methyl-benzimidazolylpyridine ligands, which are connected to each other by either a conjugated polyp-phenylene ethynylene PPE core or a polyp-xylyene PPX core. The metalorganic supramolecular polymers based on ditopic polyp-xylyene macromonomers were investigated as easy-to-process high-temperature-resistant materials. We demonstrated that these supramolecular materials are indeed easily processably in common organic solvents and that their thermal stability is very similar to that of common but intractable polyp-xylenes. In addition, investigations of metallo-supramolecular polymers based on the ditopic polyp-phenylene ethynylene macromonomers have demonstrated the potential of these systems as sensors for chemical warfare agents. In particular, we have shown that these materials and selected derivatives exhibit significant changes in fluorescence in the presence of organophosphates and that different organophosphates show different responses.
- Organic Chemistry
- Polymer Chemistry