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


Reference:

Whitelaw, E. L., Loraine, G., Mahon, M. F. and Jones, M. D., 2011. Salalen aluminium complexes and their exploitation for the ring opening polymerisation of rac-lactide. Dalton Transactions, 40 (43), pp. 11469-11473.

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    Official URL:

    http://dx.doi.org/10.1039/c1dt11438g

    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.

    Details

    Item Type Articles
    CreatorsWhitelaw, E. L., Loraine, G., Mahon, M. F. and Jones, M. D.
    DOI10.1039/c1dt11438g
    DepartmentsFaculty of Science > Chemistry
    RefereedYes
    StatusPublished
    ID Code27327

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