Manganese(ii) Schiff-base-mediated reversible deactivation controlled radical polymerization of vinyl acetate

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal de Uberlândia (UFU)-
Autor(es): dc.contributorBrno University of Technology-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorHashimoto, Patricia K. [UNESP]-
Autor(es): dc.creatorOliveira, Larissa F. [UNESP]-
Autor(es): dc.creatorRiga-Rocha, Beatriz A. [UNESP]-
Autor(es): dc.creatorMacHado, Antonio E. H.-
Autor(es): dc.creatorSantana, Vinicius T.-
Autor(es): dc.creatorNascimento, Otaciro R.-
Autor(es): dc.creatorCarvalho-Jr, Valdemiro P. [UNESP]-
Autor(es): dc.creatorGoi, Beatriz E. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:47:09Z-
Data de disponibilização: dc.date.available2022-02-22T00:47:09Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-14-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1039/d1nj00493j-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/206465-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/206465-
Descrição: dc.descriptionA series of new manganese(ii) complexes were prepared with three bidentate Schiff-base ligands derived by condensation of salicylaldehyde and different cycloalkylamines (cycloalkyl = cyclopentyl, cyclohexyl, and cycloheptyl): [Mn(CyPen-Salicyl)2] (1), [Mn(CyHex-Salicyl)2] (2), and [Mn(CyHep-Salicyl)2] (3). The complexes 1-3 were characterized by FTIR, UV-vis and EPR spectroscopy, elemental analysis, cyclic voltammetry, and computational methods. The manganese(ii) complexes (1-3) were used as controlling agents for the polymerization of vinyl acetate (VAc) initiated by AIBN according to an organometallic-mediated radical polymerization (OMRP) mechanism. The VAc polymerization mediated by the Mn complexes suggests that the control level can be slightly tuned through substitution of the cycloalkyl group on the Schiff-base ligand. Kinetics studies and computational investigations support an RT mechanism and a tailorable Mn complex reactivity mainly altered by steric factors of the Schiff-base ligands. The calculated thermodynamic parameters agree with the mediating ability of these complexes, since the degree of polymerization control decreases with increasing steric hindrance of the Schiff-base ligands, as well as with increasing ΔG values for the formation of dormant species.-
Descrição: dc.descriptionFaculdade de Ciências e Tecnologia UNESP-Univ. Estadual Paulista-
Descrição: dc.descriptionInstituto de Química Universidade Federal de Uberlândia, P.O. Box 593-
Descrição: dc.descriptionCEITEC-Central European Institute of Technology Brno University of Technology, Purkyňova 123-
Descrição: dc.descriptionInstituto de Física de São Carlos Usp Universidade de São Paulo-
Descrição: dc.descriptionFaculdade de Ciências e Tecnologia UNESP-Univ. Estadual Paulista-
Formato: dc.format10109-10117-
Idioma: dc.languageen-
Relação: dc.relationNew Journal of Chemistry-
???dc.source???: dc.sourceScopus-
Título: dc.titleManganese(ii) Schiff-base-mediated reversible deactivation controlled radical polymerization of vinyl acetate-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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