Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands

Detalhes bibliográficos
Autor(a) principal: Bignardi, Camila [UNESP]
Data de Publicação: 2022
Outros Autores: Oliveira, Larissa F. [UNESP], Pesqueira, Naralyne M. [UNESP], Riga-Rocha, Beatriz A. [UNESP], Machado, Antonio E.H., Carvalho-Jr, Valdemiro P. [UNESP], Goi, Beatriz E. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jphotochem.2021.113595
http://hdl.handle.net/11449/222619
Resumo: Three new cobalt(II) complexes with non-symmetrically-substituted N2O2 tetradentate Schiff-base ligands, prepared from the 1:1:1 condensation of 3-etoxy-salicylaldehyde, salicylaldehyde and ethylenediamine (H2Etsal − 1), o-phenylenediamine (H2Phsal − 2) or 1,2-cis,trans-cyclohexyldiamine (H2Cysal − 3), were synthesized. The complexes 1–3 were characterized by UV–Vis, FTIR, and MALDI-TOF spectroscopy, elemental analysis, molar conductance, cyclic voltammetry, and computational methods. The CoII-Schiff-base complexes (1–3) were used as controlling agents for the polymerization of n-butyl acrylate (BA) photoinitiated by diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), according to an organometallic-mediated radical polymerization (OMRP) mechanism. Although, all complexes have presented good control ability, the polymerization mediated by complex 1 showed the best control over molecular weight (Mn matching with Mn,th) and dispersity (Ð < 1.50). Kinetic results and computational investigations support the activation/deactivation equilibrium, exerted by complexes 1–3, occurring by one face of the complexes via reversible termination (RT) mechanism.minim.
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spelling Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligandsCoII complexesn-Butyl acrylatephoto-OMRPTetradentate Schiff-baseThree new cobalt(II) complexes with non-symmetrically-substituted N2O2 tetradentate Schiff-base ligands, prepared from the 1:1:1 condensation of 3-etoxy-salicylaldehyde, salicylaldehyde and ethylenediamine (H2Etsal − 1), o-phenylenediamine (H2Phsal − 2) or 1,2-cis,trans-cyclohexyldiamine (H2Cysal − 3), were synthesized. The complexes 1–3 were characterized by UV–Vis, FTIR, and MALDI-TOF spectroscopy, elemental analysis, molar conductance, cyclic voltammetry, and computational methods. The CoII-Schiff-base complexes (1–3) were used as controlling agents for the polymerization of n-butyl acrylate (BA) photoinitiated by diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), according to an organometallic-mediated radical polymerization (OMRP) mechanism. Although, all complexes have presented good control ability, the polymerization mediated by complex 1 showed the best control over molecular weight (Mn matching with Mn,th) and dispersity (Ð < 1.50). Kinetic results and computational investigations support the activation/deactivation equilibrium, exerted by complexes 1–3, occurring by one face of the complexes via reversible termination (RT) mechanism.minim.Faculdade de Ciências e Tecnologia UNESP – Univ. Estadual Paulista, CEP 19060-900Instituto de Química Universidade Federal de Uberlândia, P.O. Box 593Faculdade de Ciências e Tecnologia UNESP – Univ. Estadual Paulista, CEP 19060-900Universidade Estadual Paulista (UNESP)Universidade Federal de Uberlândia (UFU)Bignardi, Camila [UNESP]Oliveira, Larissa F. [UNESP]Pesqueira, Naralyne M. [UNESP]Riga-Rocha, Beatriz A. [UNESP]Machado, Antonio E.H.Carvalho-Jr, Valdemiro P. [UNESP]Goi, Beatriz E. [UNESP]2022-04-28T19:45:49Z2022-04-28T19:45:49Z2022-01-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jphotochem.2021.113595Journal of Photochemistry and Photobiology A: Chemistry, v. 423.1010-6030http://hdl.handle.net/11449/22261910.1016/j.jphotochem.2021.1135952-s2.0-85116892573Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Photochemistry and Photobiology A: Chemistryinfo:eu-repo/semantics/openAccess2022-04-28T19:45:50Zoai:repositorio.unesp.br:11449/222619Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:20:24.433158Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands
title Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands
spellingShingle Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands
Bignardi, Camila [UNESP]
CoII complexes
n-Butyl acrylate
photo-OMRP
Tetradentate Schiff-base
title_short Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands
title_full Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands
title_fullStr Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands
title_full_unstemmed Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands
title_sort Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands
author Bignardi, Camila [UNESP]
author_facet Bignardi, Camila [UNESP]
Oliveira, Larissa F. [UNESP]
Pesqueira, Naralyne M. [UNESP]
Riga-Rocha, Beatriz A. [UNESP]
Machado, Antonio E.H.
Carvalho-Jr, Valdemiro P. [UNESP]
Goi, Beatriz E. [UNESP]
author_role author
author2 Oliveira, Larissa F. [UNESP]
Pesqueira, Naralyne M. [UNESP]
Riga-Rocha, Beatriz A. [UNESP]
Machado, Antonio E.H.
Carvalho-Jr, Valdemiro P. [UNESP]
Goi, Beatriz E. [UNESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade Federal de Uberlândia (UFU)
dc.contributor.author.fl_str_mv Bignardi, Camila [UNESP]
Oliveira, Larissa F. [UNESP]
Pesqueira, Naralyne M. [UNESP]
Riga-Rocha, Beatriz A. [UNESP]
Machado, Antonio E.H.
Carvalho-Jr, Valdemiro P. [UNESP]
Goi, Beatriz E. [UNESP]
dc.subject.por.fl_str_mv CoII complexes
n-Butyl acrylate
photo-OMRP
Tetradentate Schiff-base
topic CoII complexes
n-Butyl acrylate
photo-OMRP
Tetradentate Schiff-base
description Three new cobalt(II) complexes with non-symmetrically-substituted N2O2 tetradentate Schiff-base ligands, prepared from the 1:1:1 condensation of 3-etoxy-salicylaldehyde, salicylaldehyde and ethylenediamine (H2Etsal − 1), o-phenylenediamine (H2Phsal − 2) or 1,2-cis,trans-cyclohexyldiamine (H2Cysal − 3), were synthesized. The complexes 1–3 were characterized by UV–Vis, FTIR, and MALDI-TOF spectroscopy, elemental analysis, molar conductance, cyclic voltammetry, and computational methods. The CoII-Schiff-base complexes (1–3) were used as controlling agents for the polymerization of n-butyl acrylate (BA) photoinitiated by diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), according to an organometallic-mediated radical polymerization (OMRP) mechanism. Although, all complexes have presented good control ability, the polymerization mediated by complex 1 showed the best control over molecular weight (Mn matching with Mn,th) and dispersity (Ð < 1.50). Kinetic results and computational investigations support the activation/deactivation equilibrium, exerted by complexes 1–3, occurring by one face of the complexes via reversible termination (RT) mechanism.minim.
publishDate 2022
dc.date.none.fl_str_mv 2022-04-28T19:45:49Z
2022-04-28T19:45:49Z
2022-01-15
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.jphotochem.2021.113595
Journal of Photochemistry and Photobiology A: Chemistry, v. 423.
1010-6030
http://hdl.handle.net/11449/222619
10.1016/j.jphotochem.2021.113595
2-s2.0-85116892573
url http://dx.doi.org/10.1016/j.jphotochem.2021.113595
http://hdl.handle.net/11449/222619
identifier_str_mv Journal of Photochemistry and Photobiology A: Chemistry, v. 423.
1010-6030
10.1016/j.jphotochem.2021.113595
2-s2.0-85116892573
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Photochemistry and Photobiology A: Chemistry
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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