| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Repo, Timo
University of Helsinki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Mesoporous silica-amine beads from blast furnace slag for CO<sub>2</sub> capture applicationscitations
- 2023Functionalization of nitrogen-doped graphene quantum dotcitations
- 2022Parahydrogen-induced polarization study of imine hydrogenations mediated by a metal-free catalystcitations
- 2017Nuclear spin hyperpolarization with ansa-aminoboranes : a metal-free perspective for parahydrogen-induced polarizationcitations
- 2016Nuclear spin hyperpolarization with ansa-aminoboranescitations
- 2016Towards improved solubility of poorly water-soluble drugscitations
- 2014Tweezers for Parahydrogencitations
- 2011Two- and three-dimensional packing diagrams of M(salophen) complexescitations
- 2006Synthesis of titanium complexes bearing two mono anionic malonic acid ester based ligands and their use as catalyst precursors in ethene polymerizationcitations
- 2006High-molar-mass polypropene with tunable elastic properties by hafnocene/borate catalystscitations
- 2004Tetrakis Sn(IV) alkoxides as novel initiators for living ring-opening polymerization of lactidescitations
- 2002New bis(imino)pyridine-iron(II)- and cobalt(II)-based catalysts: synthesis characterization and activity towards polymerization of ethylenecitations
- 2002Copolymerization of propene with phenylnorbornene using ansa-bridged metallocene catalystscitations
- 2001Copolymerization of carbon monoxide with exo-methylenecycloalkane and dienes: synthesis of functionalized aliphatic polyketonescitations
- 2000Synthesis and crystal structure of [1-(eta(5)-9-fluorenyl)-2-(eta(5)-1-indenyl)ethane]-hafnium dimethyl
Places of action
| Organizations | Location | People |
|---|
article
Tetrakis Sn(IV) alkoxides as novel initiators for living ring-opening polymerization of lactides
Abstract
The use of tetrakis Sn(IV) alkoxides as highly active initiators for the ring-opening polymerization Of D,L-lactide is reported. The activities of prepared Sn(IV) tetra-2-methyl-2-butoxide, Sn(IV) tetra-iso-propoxide, and Sn(IV) tetra-ethoxide were compared to a well-known ring-opening polymerization initiator system, Sn(II) octoate activated with n-butanol. All polymerizations were conducted at 75 degreesC in toluene. The activities of tetrakis Sn(IV) alkoxides grew in order of increasing steric hindrance, and the bulky Sn(IV) alkoxides showed higher activity than the Sn(II) octoate/butanol system. The living character of the polymerization was demonstrated in homopolymerization Of D,L-lactide and in block copolymerization Of L-lactide with E-caprolactone. H-1, C-13, and Sn-119 NMR were used to characterize the prepared Sn(IV) alkoxides and the polymer microstructure, and size exclusion chromatography was used to determine the molar masses as well as the molar-mass distributions of the polymers. (C) 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 1901-1911, 2004.