| People | Locations | Statistics |
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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
Zn<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 Bulk
Abstract
<jats:p>Eight new zinc complexes of bisguanidine ligands have been structurally characterised and tested for the polymerisation of lactide. Initially this necessitated the preparation of the new six bisguanidine ligands [TMG<jats:sub>2</jats:sub>thf, DMEG<jats:sub>2</jats:sub>thf, <jats:italic>trans</jats:italic>‐TMG<jats:sub>2</jats:sub>(1,2)ch, <jats:italic>trans</jats:italic>‐DMEG<jats:sub>2</jats:sub>(1,2)ch, <jats:italic>R</jats:italic>,<jats:italic>R</jats:italic>‐TMG<jats:sub>2</jats:sub>(1,2)ch, <jats:italic>R</jats:italic>,<jats:italic>R</jats:italic>‐DMEG<jats:sub>2</jats:sub>(1,2)ch]. With these ligands in hand, zinc chlorido complexes could be obtained, which were characterized by X‐ray crystallography and NMR spectroscopy. Furthermore, two new zinc chlorido complexes are reported, based on previous bisguanidine ligands [TMG<jats:sub>2</jats:sub>(1,3)ch, DMEG<jats:sub>2</jats:sub>(1,3)ch]. All complexes show a distorted tetrahedral coordination geometry. These eight complexes are utilised as catalysts in melt polymerization of unsublimed, technical <jats:italic>rac</jats:italic>‐lactide at 150 °C. The most promising complexes were tested with different purities of lactide (technical and recrystallized) and with or without the addition of a co‐initiator. The conversion was determined using <jats:sup>1</jats:sup>H‐NMR or FT‐IR spectroscopy. Kinetic measurements show first‐order behaviour with respect to lactide. The end group of the polymer was determined by MALDI‐ToF measurements. Moreover, the impact of chiral complexes was examined with regard to the tacticity of the polymer. Complexes containing a thf backbone show the highest polymerisation activity with recrystallized <jats:italic>rac</jats:italic>‐lactide and benzyl alcohol as co‐initiator.</jats:p>