Photoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
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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Repositório Institucional da UNESP |
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2946 |
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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 |
|
_version_ |
1808128921193938944 |