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

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal de Uberlândia (UFU)-
Autor(es): dc.creatorBignardi, Camila-
Autor(es): dc.creatorOliveira, Larissa F.-
Autor(es): dc.creatorPesqueira, Naralyne M.-
Autor(es): dc.creatorRiga-Rocha, Beatriz A.-
Autor(es): dc.creatorMachado, Antonio E.H.-
Autor(es): dc.creatorCarvalho-Jr, Valdemiro P.-
Autor(es): dc.creatorGoi, Beatriz E.-
Data de aceite: dc.date.accessioned2025-08-21T18:50:38Z-
Data de disponibilização: dc.date.available2025-08-21T18:50:38Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-01-14-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jphotochem.2021.113595-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/222619-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/222619-
Descrição: dc.descriptionThree 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.-
Descrição: dc.descriptionFaculdade de Ciências e Tecnologia UNESP – Univ. Estadual Paulista, CEP 19060-900-
Descrição: dc.descriptionInstituto de Química Universidade Federal de Uberlândia, P.O. Box 593-
Descrição: dc.descriptionFaculdade de Ciências e Tecnologia UNESP – Univ. Estadual Paulista, CEP 19060-900-
Idioma: dc.languageen-
Relação: dc.relationJournal of Photochemistry and Photobiology A: Chemistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCoII complexes-
Palavras-chave: dc.subjectn-Butyl acrylate-
Palavras-chave: dc.subjectphoto-OMRP-
Palavras-chave: dc.subjectTetradentate Schiff-base-
Título: dc.titlePhotoinduced organometallic mediating radical polymerization of acrylates mediated by CoII complexes of non-symmetrical tetradentate Schiff-base ligands-
Tipo de arquivo: dc.typelivro digital-
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