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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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Hadjichristidis, Nikos
European Commission
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Interpenetrated and Bridged Nanocylinders from Self-Assembled Star Block Copolymerscitations
- 2024Controlled Ring‐Opening Polymerization of Methyl Glycolide with Bifunctional Organocatalystcitations
- 2023Poly(lactic acid) stereocomplexes based molecular architectures : synthesis and crystallization
- 2020Poly(vinylidene fluoride)-based Complex Macromolecular Architectures: From Synthesis to Properties and Applicationscitations
- 2019Generating Triple Crystalline Superstructures in Melt Miscible PEO-b-PCL-b-PLLA Triblock Terpolymers by Controlling Thermal History and Sequential Crystallizationcitations
- 2018CO 2 as versatile carbonation agent of glycosides: Synthesis of 5- and 6-membered cyclic glycocarbonates and investigation of their ring-openingcitations
- 2018Block Copolymers of Macrolactones/Small Lactones by a “Catalyst-Switch” Organocatalytic Strategy. Thermal Properties and Phase Behaviorcitations
- 2017A New Role for CO2: Controlling Agent of the Anionic Ring-Opening Polymerization of Cyclic Esterscitations
- 2017Self-assembly of Polystyrene- b -poly(2-vinylpyridine)- b -poly(ethylene oxide) Triblock Terpolymerscitations
- 2017Anionic Polymerization of Styrene and 1,3-Butadiene in the Presence of Phosphazene Superbasescitations
- 2016Metal-Free Alternating Copolymerization of CO2with Epoxides: Fulfilling “Green” Synthesis and Activitycitations
- 2016Well-defined 4-arm stars with hydroxy-terminated polyethylene, polyethylene-b-polycaprolactone and polyethylene-b-(polymethyl methacrylate) 2 armscitations
- 2016Ring-opening polymerization of ω-pentadecalactone catalyzed by phosphazene superbasescitations
- 2015Triblock and pentablock terpolymers by sequential base-assisted living cationic copolymerization of functionalized vinyl etherscitations
- 2009Solid state nanofibers based on self-assemblies:from cleaving from self-assemblies to multilevel hierarchical constructscitations
Places of action
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article
Metal-Free Alternating Copolymerization of CO2with Epoxides: Fulfilling “Green” Synthesis and Activity
Abstract
Polycarbonates were successfully synthesized for the first time through the anionic copolymerization of epoxides with CO2, under metal-free conditions. Using an approach based on the activation of epoxides by Lewis acids and of CO, by appropriate cations, well-defined alternating copolymers made of CO, and propylene oxide (PO) or cyclohexene oxide (CHO) were indeed obtained. Triethyl borane was the Lewis acid chosen to activate the epoxides, and onium halides or onium alkoxides involving either ammonium, phosphonium, or phosphazenium cations were selected to initiate the copolymerization. In the case of PO, the carbonate content of the poly(propylene carbonate) formed was in the range of 92-99% and turnover numbers (TON) were close to 500; in the case of CHO perfectly alternating poly(cyclohexene carbonate) were obtained and TON values were close to 4000. The advantages of such a copolymerization system are manifold: (i) no need for multistep catalyst/ligand synthesis as in previous works; (ii) no transition metal involved in the copolymer synthesis and therefore no coloration of the samples isolated; and (iii) no necessity for postsynthesis purification.