Noncovalent assembly. A rational strategy for the realization of chain-growth supramolecular polymerization
- PMID: 25657246
- DOI: 10.1126/science.aaa4249
Noncovalent assembly. A rational strategy for the realization of chain-growth supramolecular polymerization
Abstract
Over the past decade, major progress in supramolecular polymerization has had a substantial effect on the design of functional soft materials. However, despite recent advances, most studies are still based on a preconceived notion that supramolecular polymerization follows a step-growth mechanism, which precludes control over chain length, sequence, and stereochemical structure. Here we report the realization of chain-growth polymerization by designing metastable monomers with a shape-promoted intramolecular hydrogen-bonding network. The monomers are conformationally restricted from spontaneous polymerization at ambient temperatures but begin to polymerize with characteristics typical of a living mechanism upon mixing with tailored initiators. The chain growth occurs stereoselectively and therefore enables optical resolution of a racemic monomer.
Copyright © 2015, American Association for the Advancement of Science.
Comment in
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Supramolecular polymers: Chain growth in control.Nat Chem. 2015 Jun;7(6):472-3. doi: 10.1038/nchem.2265. Nat Chem. 2015. PMID: 25991523 No abstract available.
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Programmable Supramolecular Polymerizations.Angew Chem Int Ed Engl. 2015 Jul 13;54(29):8334-6. doi: 10.1002/anie.201503104. Epub 2015 Jun 10. Angew Chem Int Ed Engl. 2015. PMID: 26095705
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