Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insights

Detalhes bibliográficos
Autor(a) principal: Mendes, Paulo J.
Data de Publicação: 2010
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/5341
Resumo: Ring-opening polymerization of cyclic esters is an important field in polymerization chemistry due to the biocompatibility and biodegradability of the obtained materials. Even if the literature concerning the ROP of lactones is vast, there is not detailed research for Group 8 transition metal based catalysts or initiators. It was only in 2006 that was reported the first example regarding the use of ruthenium derivatives in ROP of lactones. In this contribution we present the results of the polymerization of ε-caprolactone by [Ru(η5-C5H5)(η6-substituted arene)][PF6] complexes in the presence of isopropyl alcohol. By in situ NMR techniques it was found that this polymerization proceeds via an activated monomer mechanism. A DFT study of the polymerization initiation step will also be presented in order to corroborate this mechanism.
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spelling Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insightsPolymerizationRu(II) catalystsε-caprolactoneRing-opening polymerization of cyclic esters is an important field in polymerization chemistry due to the biocompatibility and biodegradability of the obtained materials. Even if the literature concerning the ROP of lactones is vast, there is not detailed research for Group 8 transition metal based catalysts or initiators. It was only in 2006 that was reported the first example regarding the use of ruthenium derivatives in ROP of lactones. In this contribution we present the results of the polymerization of ε-caprolactone by [Ru(η5-C5H5)(η6-substituted arene)][PF6] complexes in the presence of isopropyl alcohol. By in situ NMR techniques it was found that this polymerization proceeds via an activated monomer mechanism. A DFT study of the polymerization initiation step will also be presented in order to corroborate this mechanism.3rd EUCHEMS, Nuremberg, Germany2012-10-11T11:18:22Z2012-10-112010-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/5341http://hdl.handle.net/10174/5341eng3rd EUCHEMS, Nuremberg, Germany 29 Aug-2 Sep, IC.011, CD-ROM abstracts (2010)http://www.euchems-congress2010.org/5576programme.pdfnaonaosimQUI - Comunicações - Em Congressos Científicos Internacionaispjgm@uevora.pt307Mendes, Paulo J.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:43:59Zoai:dspace.uevora.pt:10174/5341Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:00:20.593144Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insights
title Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insights
spellingShingle Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insights
Mendes, Paulo J.
Polymerization
Ru(II) catalysts
ε-caprolactone
title_short Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insights
title_full Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insights
title_fullStr Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insights
title_full_unstemmed Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insights
title_sort Polymerization of ɛ-caprolactone using Ru(II) Catalysts: mechanistic insights
author Mendes, Paulo J.
author_facet Mendes, Paulo J.
author_role author
dc.contributor.author.fl_str_mv Mendes, Paulo J.
dc.subject.por.fl_str_mv Polymerization
Ru(II) catalysts
ε-caprolactone
topic Polymerization
Ru(II) catalysts
ε-caprolactone
description Ring-opening polymerization of cyclic esters is an important field in polymerization chemistry due to the biocompatibility and biodegradability of the obtained materials. Even if the literature concerning the ROP of lactones is vast, there is not detailed research for Group 8 transition metal based catalysts or initiators. It was only in 2006 that was reported the first example regarding the use of ruthenium derivatives in ROP of lactones. In this contribution we present the results of the polymerization of ε-caprolactone by [Ru(η5-C5H5)(η6-substituted arene)][PF6] complexes in the presence of isopropyl alcohol. By in situ NMR techniques it was found that this polymerization proceeds via an activated monomer mechanism. A DFT study of the polymerization initiation step will also be presented in order to corroborate this mechanism.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01T00:00:00Z
2012-10-11T11:18:22Z
2012-10-11
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/5341
http://hdl.handle.net/10174/5341
url http://hdl.handle.net/10174/5341
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 3rd EUCHEMS, Nuremberg, Germany 29 Aug-2 Sep, IC.011, CD-ROM abstracts (2010)
http://www.euchems-congress2010.org/5576programme.pdf
nao
nao
sim
QUI - Comunicações - Em Congressos Científicos Internacionais
pjgm@uevora.pt
307
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv 3rd EUCHEMS, Nuremberg, Germany
publisher.none.fl_str_mv 3rd EUCHEMS, Nuremberg, Germany
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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