| 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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Davidson, Matthew G.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2022Comparison of Cyclic and Linear Poly(lactide)s Using Small-Angle Neutron Scattering
- 2020Organocatalysis for versatile polymer degradationcitations
- 2020Low-temperature and purification-free stereocontrolled ring-opening polymerisation of lactide in supercritical carbon dioxidecitations
- 2017Zirconium amine tris(phenolate):A more effective initiator for biomedical lactidecitations
- 2017Zirconium amine tris(phenolate)citations
- 2016Aminopiperidine based complexes for lactide polymerisationcitations
- 2014Preparation of stereoregular isotactic poly(mandelic acid) through organocatalytic ring-opening polymerization of a cyclic O-carboxyanhydridecitations
- 2013Synthesis and structural characterization of group 4 metal alkoxide complexes of N, N, N ′,N ′-tetrakis(2-hydroxyethyl)ethylenediamine and their use as initiators in the ring-opening polymerization (ROP) of rac -lactide under industrially relevant conditionscitations
- 2009Synthesis and structure of aluminium amine-phenolate complexescitations
- 2006Synthesis and X-ray structures of new titanium(IV) aryloxides and their exploitation for the ring opening polymerization of epsilon-caprolactonecitations
Places of action
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article
Synthesis and structural characterization of group 4 metal alkoxide complexes of N, N, N ′,N ′-tetrakis(2-hydroxyethyl)ethylenediamine and their use as initiators in the ring-opening polymerization (ROP) of rac -lactide under industrially relevant conditions
Abstract
A series of N,N,N′,N′-tetrakis(2-hydroxyethyl)ethylenediamine (TOEEDH4) ligand precursors and their group 4 metal complexes have been prepared. The complexes have been characterized by single-crystal X-ray diffraction and 1H NMR spectroscopy, highlighting the ability to systematically vary the number of TOEED ligands within the system. Initial catalytic data for the solvent-free, ring-opening polymerization of rac-lactide (rac-LA), a promising degradable polymer produced from renewable resources, is reported. At 135 C, it has been demonstrated that the activity of the complexes is enhanced by increasing the number of labile isopropoxide groups. When the temperature was further increased to 165 C, all complexes demonstrated a far higher activity irrespective of the identity of the metal or number of labile initiator groups. Polymerization kinetics were monitored in real time using FT-IR spectroscopy with a diamond composite insertion probe and Ti 4(TOEED)(OiPr)12 was demonstrated to convert over 95% of the rac-LA within 160 min.