title: Dicationic and zwitterionic catalysts for the amine-initiated, immortal ring-opening polymerisation of rac-lactide: facile synthesis of amine-terminated, highly heterotactic PLA.
abstract: Dicationic, zwitterionic and "conventional" yttrium compounds act as catalysts for the primary or secondary amine-initiated immortal ROP of rac-lactide; amine-terminated, highly heterotactic poly(rac-lactides) with narrow polydispersities and well-controlled molecular weights are prepared in this manner.
authors.affiliation: Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, UK OX1 3TA.
authors.forename: Lawrence
authors.initials: L
authors.lastname: Clark
authors.forename: Michael G
authors.initials: MG
authors.lastname: Cushion
authors.forename: Hellen E
authors.initials: HE
authors.lastname: Dyer
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Schwarz
authors.forename: Robbert
authors.initials: R
authors.lastname: Duchateau
authors.forename: Philip
authors.initials: P
authors.lastname: Mountford
mesh_terms: D000588:Amines / Q000737:chemistry*; D002384:Catalysis; D002412:Cations / Q000737:chemistry*; D004146:Dioxanes / Q000737:chemistry*; D008968:Molecular Conformation; D011091:Polyesters / Q000138:chemical synthesis* / Q000737:chemistry; D015019:Yttrium / Q000737:chemistry
chemical_list: D000588:Amines; D002412:Cations; D004146:Dioxanes; D011091:Polyesters; C033616:poly(lactide); D015019:Yttrium; C091880:dilactide