Salalen aluminium complexes and their exploitation for the ring opening polymerisation of rac-lactide

Emma L Whitelaw, Gaynor Loraine, Mary F Mahon, Matthew D Jones

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)
143 Downloads (Pure)

Abstract

In this paper we report the first use of Al(iii) salalen complexes for the ring opening polymerisation of rac-lactide. Polylactides with narrow polydispersities (PDIs range from 1.04-1.65) and moderate degrees of stereoselectivity were formed. Eight salalen Al(iii) complexes have been prepared and fully characterised by solution-state NMR spectroscopy and, where appropriate, single crystal X-ray diffraction. With ligand 3H2 either a monomeric or dimeric Al(iii) species was formed, the dimeric species was favoured at low concentrations. The complexes were tested for the ring opening polymerisation of rac-lactide in toluene at 80 or 100 C. Interestingly, various tacticities of polymer were formed, which were dependent upon the nature of the group bound to the amine nitrogen centre.
Original languageEnglish
Pages (from-to)11469-11473
Number of pages5
JournalDalton Transactions
Volume40
Issue number43
DOIs
Publication statusPublished - 21 Nov 2011

Fingerprint

Dive into the research topics of 'Salalen aluminium complexes and their exploitation for the ring opening polymerisation of rac-lactide'. Together they form a unique fingerprint.

Cite this