Abstract
A magnesium complex of the type {ONNN}Mg-HMDS wherein {ONNN} is a sequential tetradentate monoanionic ligand is introduced. In the presence of an alcohol initiator this complex catalyzes the living and immortal homopolymerization of the lactide enantiomers and ϵ-caprolactone at room-temperature with exceptionally high activities, as well as the precise block copolymerization of these monomers in a one-pot synthesis by sequential monomer addition. Copolymers of unprecedented microstructures such as the PCL-b-PLLA-b-PDLA and PDLA-b-PLLA-b-PCL-b-PLLA-b-PDLA block–stereoblock microstructures that feature unique thermal properties are readily accessed.
Original language | English |
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Pages (from-to) | 7191-7195 |
Number of pages | 5 |
Journal | Angewandte Chemie - International Edition |
Volume | 57 |
Issue number | 24 |
DOIs | |
State | Published - 11 Jun 2018 |
Keywords
- block copolymers
- living polymerization
- magnesium
- poly(lactic acid)
- poly(ϵ-caprolactone)