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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Jones, Matthew D.
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2019Copolymerization of Cyclic Phosphonate and Lactide: Synthetic Strategies toward Control of Amphiphilic Microstructurecitations
- 2018Bipyrrolidine salan alkoxide complexes of lanthanides: synthesis, characterisation, activity in the polymerisation of lactide and mechanistic investigation by DOSY NMRcitations
- 2017Synthesis of PLGA using a C3-symmetric Zr (IV) amine tris(phenolate) alkoxide initiator and the effects of gamma radiation on its propertiescitations
- 2017Zirconium amine tris(phenolate):A more effective initiator for biomedical lactidecitations
- 2017Zirconium amine tris(phenolate)citations
- 2017Zn<sup>II</sup> Chlorido Complexes with Aliphatic, Chiral Bisguanidine Ligands as Catalysts in the Ring‐Opening Polymerisation of <i>rac</i>‐Lactide Using FT‐IR Spectroscopy in Bulkcitations
- 2016Aminopiperidine based complexes for lactide polymerisationcitations
- 2013Synergistic empirical and theoretical study on the stereoselective mechanism for the aluminum salalen complex mediated polymerization of rac-Lactidecitations
- 2011Homopiperazine and piperazine complexes of Zr(IV) and Hf(IV) and their application to the ring-opening polymerisation of lactidecitations
- 2011Salalen aluminium complexes and their exploitation for the ring opening polymerisation of rac-lactidecitations
- 2009Synthesis and structure of aluminium amine-phenolate complexescitations
- 2009Novel Ti(IV) and Zr(IV) complexes and their application in the ring-opening polymerisation of cyclic esterscitations
- 2006Synthesis and X-ray structures of new titanium(IV) aryloxides and their exploitation for the ring opening polymerization of epsilon-caprolactonecitations
- 2003trans-bis[(S)-(-)-2-aminomethyl-1-ethylpyrrolidine-kappa N-2]palladium(II) dichloride methanol trisolvate
- 2003(η3-Allyl)[(S)-(+)-(2-pyrrolidinylmethyl)-pyrrolidine] palladium(II) trifluoromethane-sulfonatecitations
- 2003(eta(3)-allyl)[(S)-(+)-(2-pyrrolidinylmethyl)pyrrolidine]palladium(II) trifluoromethanesulfonate
- 2003[1,1 '-bis(diphenylphosphino)ferrocene-kappa P-2,P '](1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonate dichloromethane disolvatecitations
- 2003(eta(3)-Allyl)[(R)-(+)-2,2 '-bis(diphenylphosphino)-1,1 '-binaphthyllpalladium(II) trifluoromethanesulfonate dichloromethane solvatecitations
Places of action
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article
Bipyrrolidine salan alkoxide complexes of lanthanides: synthesis, characterisation, activity in the polymerisation of lactide and mechanistic investigation by DOSY NMR
Abstract
<p>Four dimeric lanthanide alkoxide complexes bearing ONNO bipyrrolidine salan ligands (L<sup>Me</sup>H<sub>2</sub>/L<sup>tBu</sup>H<sub>2</sub>) have been prepared with Nd, Sm and Yb. Depending on the metal and substituents, these complexes adopt varying coordination geometries. While investigating the hydrolytic degradation of these complexes, three dimeric mixed alkoxide/hydroxide and bis-hydroxide products were also prepared, isolated and characterised. Despite paramagnetism,<sup>1</sup>H NMR and diffusion ordered spectroscopy (DOSY) allowed additional characterisation alongside elemental and single-crystal X-ray diffraction analyses. These systems were very active for the controlled ring-opening polymerisation (ROP) of rac-lactide (LA), under industrially relevant melt conditions and in solution, yielding complete conversion within 5 minutes at [Ln]:[LA] ratios of up to 3000:1 in toluene, and at 80 °C, whilst retaining low dispersities (D = 1.1).<sup>1</sup>H DOSY NMR spectroscopy was employed to monitor polymer growth from the metal centres in situ, and revealed a dinuclear catalytically active species.</p>