Remarkable stereocontrol in the polymerization of racemic lactide using aluminum initiators supported by tetradentate aminophenoxide ligands |
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| Authors: | Hormnirun Pimpa Marshall Edward L Gibson Vernon C White Andrew J P Williams David J |
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| Affiliation: | Imperial College London, South Kensington Campus, London SW7 2AY, UK. |
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| Abstract: | A new family of aluminum complexes bearing tetradentate bis(aminophenoxide) ligands is reported and shown to initiate the living ring-opening polymerization of rac-lactide. The microstructures of the polylactide products are found to be highly dependent upon the ancillary ligand substituents, ranging from highly isotactic (Pm = 0.79) to very highly heterotactic (Pr = 0.96). |
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