From NMP to RAFT and thiol-ene chemistry by in situ functionalization of nitroxide chain ends
| Autor: | Pieter Espeel, Lionel Petton, Milan M. Stamenović, Andrés Eduardo Ciolino, Filip Du Prez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Nitroxide mediated radical polymerization
ALKOXYAMINE BLOCK COPOLYMERS Polymers and Plastics STYRENE Macromolecular Substances Polymers INGENIERÍAS Y TECNOLOGÍAS METHYL-METHACRYLATE Polymerization Aminolysis DISULFIDES Polymer chemistry ISOPRENE Materials Chemistry Copolymer medicine Sulfhydryl Compounds AGENTS COPOLYMERIZATION THIOL-ENE CHEMISTRY Molecular Structure Chemistry Organic Chemistry technology industry and agriculture Chain transfer FREE-RADICAL POLYMERIZATIONS Raft FUNCTIONALIZATION OF POLYMERS Vinyl ether MEDIATED POLYMERIZATION REVERSIBLE ADDITION-FRAGMENTATION CHAIN TRANSFER Ingeniería Química End-group NITROXIDE-MEDIATED POLYMERIZATION Otras Ingeniería Química Nitrogen Oxides POLYMERS medicine.drug |
| Zdroj: | MACROMOLECULAR RAPID COMMUNICATIONS |
| ISSN: | 1022-1336 |
| Popis: | A straightforward, novel strategy based on the in situ functionalization of polymers prepared by nitroxide-mediated polymerization (NMP), for the use as an extension toward block copolymers and post-polymerization modifications, has been investigated. The nitroxide end group is exchanged for a thiocarbonylthio end group by a rapid transfer reaction with bis(thiobenzoyl) disulfide to generate in situ reversible addition-fragmentation chain transfer (RAFT) macroinitiators. Moreover, not only have these macroinitiators been used in chain extension and block copolymerization experiments by the RAFT process but also a thiol-terminated polymer is synthesized by aminolysis of the RAFT end group and subsequently reacted with dodecyl vinyl ether by thiol-ene chemistry. A strategy based on the controlled addition of a disulfide during NMP is investigated for the synthesis of macro-CTA's. These compounds are subsequently used to obtain block copolymers by RAFT polymerization and also reduced to thiols for further functionalization of the polymer chain-ends by thiol-ene chemistry. Fil: Petton, Lionel. University of Ghent; Bélgica Fil: Ciolino, Andrés Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina. University of Ghent; Bélgica Fil: Stamenović, Milan M.. University of Ghent; Bélgica Fil: Espeel, Pieter. University of Ghent; Bélgica Fil: Du Prez, Filip E.. University of Ghent; Bélgica |
| Databáze: | OpenAIRE |
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