Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 51, Pages 16893-16897Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201810245
Keywords
aluminium salen catalysts; block polyesters; ring-opening copolymerization; ring-opening polymerization; switch catalysis
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Funding
- EPSRC [EP/L017393/1, EP/K014668/1]
- EPSRC [EP/L017393/1, EP/K014668/1] Funding Source: UKRI
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Switchable polymerisation catalysis enables block polymer sequence selectivity from monomer mixtures, resulting in the formation of multiblock polyesters. The aluminium salphen catalyst switches between two different polymerisation mechanisms and selectively enchains mixtures of commercially available monomers: lactide, phthalic anhydride, and propene oxide. Sequential monomer mixture additions yield multi-block polyesters featuring 3, 7, 11, 15, 19, 23, and 27 blocks. The unparalleled catalytic selectivity can be used to access completely new multi-block polyesters relevant for future applications.
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