| Copper-Mediated Controlled/"Living" Radical Polymerization in Polar Solvents: Insights into Some Relevant Mechanistic Aspects. | |
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MedLine Citation:
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PMID: 22378618 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The field of transition-metal-mediated controlled/"living" radical polymerization (CLRP) has become the subject of intense discussion regarding the mechanism of this widely-used and versatile process. Most mechanistic analyses (atom transfer radical polymerization (ATRP) vs. single-electron transfer living radical polymerization (SET-LRP)) have been based on model experiments, which cannot correctly mimic the true reaction conditions. We present, for the first time, a determination of the [Cu(I) Br]/[L] (L=nitrogen-based chelating ligand) ratio and the extent of Cu(I) Br/L disproportionation during CLRP of methyl acrylate (MA) in dimethylsulfoxide (DMSO) with Cu(0) wire as a transition-metal catalyst source. The results suggest that Cu(0) acts as a supplemental activator and reducing agent of Cu(II) Br(2) /L to Cu(I) Br/L. More importantly, the Cu(I) Br/L species seem to be responsible for the activation of SET-LRP. |
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Authors:
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Tamaz Guliashvili; Patrícia V Mendonça; Arménio C Serra; Anatoliy V Popov; Jorge F J Coelho |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-29 |
Journal Detail:
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Title: Chemistry (Weinheim an der Bergstrasse, Germany) Volume: - ISSN: 1521-3765 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-3-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9513783 Medline TA: Chemistry Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Affiliation:
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GE Power and Water; Water & Process Technologies, 4636 Somerton Road, Trevose, PA 19053 (USA), Fax: (+1) 215-953-2361. tamaz.guliashvili@ge.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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