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High Temperature, Living Polymerization of Ethylene by a Sterically-Demanding Nickel(II) α-Diimine Catalyst

Catalysts that employ late transition-metals, namely Ni and Pd, have been extensively studied for olefin polymerizations, co-polymerizations, and for the synthesis of advanced polymeric structures, such as block co-polymers. Unfortunately, many of these catalysts often exhibit poor thermal stability...

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Autores principales: Brown, Lauren A., Anderson, W. Curtis, Mitchell, Nolan E., Gmernicki, Kevin R., Long, Brian K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415045/
https://www.ncbi.nlm.nih.gov/pubmed/30966076
http://dx.doi.org/10.3390/polym10010041
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author Brown, Lauren A.
Anderson, W. Curtis
Mitchell, Nolan E.
Gmernicki, Kevin R.
Long, Brian K.
author_facet Brown, Lauren A.
Anderson, W. Curtis
Mitchell, Nolan E.
Gmernicki, Kevin R.
Long, Brian K.
author_sort Brown, Lauren A.
collection PubMed
description Catalysts that employ late transition-metals, namely Ni and Pd, have been extensively studied for olefin polymerizations, co-polymerizations, and for the synthesis of advanced polymeric structures, such as block co-polymers. Unfortunately, many of these catalysts often exhibit poor thermal stability and/or non-living polymerization behavior that limits their ability to access tailored polymer structures. Due to this, the development of catalysts that display controlled/living behavior at elevated temperatures is vital. In this manuscript, we describe a Ni α-diimine complex that is capable of polymerizing ethylene in a living manner at temperatures as high as 75 °C, which is one of the highest temperatures reported for the living polymerization of ethylene by a late transition metal-based catalyst. Furthermore, we will demonstrate that this catalyst’s living behavior is not dependent on the presence of monomer, and that it can be exploited to access polyethylene-based block co-polymers.
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spelling pubmed-64150452019-04-02 High Temperature, Living Polymerization of Ethylene by a Sterically-Demanding Nickel(II) α-Diimine Catalyst Brown, Lauren A. Anderson, W. Curtis Mitchell, Nolan E. Gmernicki, Kevin R. Long, Brian K. Polymers (Basel) Article Catalysts that employ late transition-metals, namely Ni and Pd, have been extensively studied for olefin polymerizations, co-polymerizations, and for the synthesis of advanced polymeric structures, such as block co-polymers. Unfortunately, many of these catalysts often exhibit poor thermal stability and/or non-living polymerization behavior that limits their ability to access tailored polymer structures. Due to this, the development of catalysts that display controlled/living behavior at elevated temperatures is vital. In this manuscript, we describe a Ni α-diimine complex that is capable of polymerizing ethylene in a living manner at temperatures as high as 75 °C, which is one of the highest temperatures reported for the living polymerization of ethylene by a late transition metal-based catalyst. Furthermore, we will demonstrate that this catalyst’s living behavior is not dependent on the presence of monomer, and that it can be exploited to access polyethylene-based block co-polymers. MDPI 2018-01-02 /pmc/articles/PMC6415045/ /pubmed/30966076 http://dx.doi.org/10.3390/polym10010041 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Brown, Lauren A.
Anderson, W. Curtis
Mitchell, Nolan E.
Gmernicki, Kevin R.
Long, Brian K.
High Temperature, Living Polymerization of Ethylene by a Sterically-Demanding Nickel(II) α-Diimine Catalyst
title High Temperature, Living Polymerization of Ethylene by a Sterically-Demanding Nickel(II) α-Diimine Catalyst
title_full High Temperature, Living Polymerization of Ethylene by a Sterically-Demanding Nickel(II) α-Diimine Catalyst
title_fullStr High Temperature, Living Polymerization of Ethylene by a Sterically-Demanding Nickel(II) α-Diimine Catalyst
title_full_unstemmed High Temperature, Living Polymerization of Ethylene by a Sterically-Demanding Nickel(II) α-Diimine Catalyst
title_short High Temperature, Living Polymerization of Ethylene by a Sterically-Demanding Nickel(II) α-Diimine Catalyst
title_sort high temperature, living polymerization of ethylene by a sterically-demanding nickel(ii) α-diimine catalyst
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415045/
https://www.ncbi.nlm.nih.gov/pubmed/30966076
http://dx.doi.org/10.3390/polym10010041
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