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Development of ruthenium complexes as dual catalytic systems in simultaneous polymerization ROMP/ATRP

Abstract

New ruthenium complexes will be developed to promote the ring opening metathesis polymerization (ROMP) and atom transfer radical polymerization (ATRP) simultaneously. The proposal is to systematically evaluate different combinations of ancillary ligands in the coordination sphere of ruthenium complexes and then, reach a fine tuning through the variation of the electronic and steric contributions, which have the task of driving the reactivity of these complexes to operate efficiently in the tandem catalysis ROMP/ATRP. The investigated ligands will be different carbenes and sulfoxides simultaneously coordinated to the ruthenium center to polymerize cyclic olefin monomers via ROMP and vinyl monomer via ATRP in order to obtain block copolymers composed of mechanically incompatible monomers. Initially, the research will focus on the catalytic activity of the complexes in ROMP and ATRP reactions separately, considering that a wide understanding of individual reactions will be a key step towards to the development of dual catalysts for tandem catalysis ROMP/ATRP. The intension is to provide base for understanding the performance of the catalysts, as well as the formation of reaction intermediates involved in each catalyse, and then, design catalytic systems that combine reactivity and selectivity for synthesis of new materials with different architecture by tandem polymerization ROMP/ATRP. (AU)

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Scientific publications (11)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ALVES AFONSO, MARIA BEATRIZ; GONCALVES, LUCAS GOMES; SILVA, TALITA TEIXEIRA; SILVA SA, JOSE LUIZ; BATISTA, NOUGA CARDOSO; GOI, BEATRIZ ELEUTERIO; CARVALHO JUNIOR, VALDEMIRO PEREIRA. Synthesis of poly(ethyl methacrylate-co-methyl methacrylate) obtained via ATRP using ruthenium benzylidene complexes. POLIMEROS-CIENCIA E TECNOLOGIA, v. 28, n. 3, p. 220-225, . (13/10002-0)
SILVA, RODOLPHO A. N.; BORIM, PATRICIA; FONSECA, LARISSA R.; LIMA-NETO, BENEDITO S.; SILVA SA, JOSE L.; CARVALHO-, JR., VALDEMIRO P.. Non-carbene Complex [RuCl2(PPh3)(2)(azocane)] as Active Catalyst Precursor for ROMP and ATRP. CATALYSIS LETTERS, v. 147, n. 5, p. 1144-1152, . (11/12571-7, 13/10002-0)
CRUZ, THAIS R.; SILVA, RODOLPHO A. N.; MACHADO, ANTONIO E. H.; LIMA-NETO, BENEDITO S.; GOI, BEATRIZ E.; CARVALHO, JR., VALDEMIRO P.. New dmso-ruthenium catalysts bearing N-heterocyclic carbene ligands for the ring-opening metathesis of norbornene. NEW JOURNAL OF CHEMISTRY, v. 43, n. 16, p. 6220-6227, . (13/10002-0)
CRUZ, THAIS R.; BORIM, PATRICIA; GOI, BEATRIZ E.; SILVA SA, JOSE L.; LIMA-NETO, BENEDITO S.; CARVALHO, JR., VALDEMIRO P.. Atom transfer radical polymerization by [RuCl2(PPh3)(2)(amine)] catalysts: Cyclic amines as tuner of reactivity. JOURNAL OF POLYMER RESEARCH, v. 24, n. 11, . (13/10002-0)
AFONSO, MARIA BEATRIZ A.; CRUZ, THAIS R.; SILVA, YAN F.; PEREIRA, JOAO CLECIO A.; MACHADO, ANTONIO E. H.; GOI, BEATRIZ E.; LIMA-NETO, BENEDITO S.; CARVALHO-, JR., VALDEMIRO P.. Ruthenium(II) complexes of Schiff base derived from cycloalkylamines as pre-catalysts for ROMP of norbornene and ATRP of methyl methacrylate. JOURNAL OF ORGANOMETALLIC CHEMISTRY, v. 851, p. 225-234, . (13/10002-0)
ALVES AFONSO, MARIA BEATRIZ; GONCALVES, LUCAS GOMES; SILVA, TALITA TEIXEIRA; SILVA SA, JOSE LUIZ; BATISTA, NOUGA CARDOSO; GOI, BEATRIZ ELEUTERIO; CARVALHO JUNIOR, VALDEMIRO PEREIRA. Synthesis of poly(ethyl methacrylate-co-methyl methacrylate) obtained via ATRP using ruthenium benzylidene complexes. POLIMEROS-CIENCIA E TECNOLOGIA, v. 28, n. 3, p. 6-pg., . (13/10002-0)
IDEHARA, ANDRE H. S.; GOIS, PATRIK D. S.; FERNANDEZ, HENRIQUE; GOI, BEATRIZ E.; MACHADO, ANTONIO E. H.; LIMA-NETO, BENEDITO S.; CARVALHO, JR., VALDEMIRO P.. Accessible ring opening metathesis and atom transfer radical polymerization catalysts based on dimethyl sulfoxide ruthenium(II) complexes bearing N-heterocyclic carbene ligands. MOLECULAR CATALYSIS, v. 448, p. 135-143, . (13/10002-0)
SILVA, TALITA T.; SILVA, YAN F.; MACHADO, ANTONIO E. H.; MAIA, PEDRO IVO S.; TASSO, CARLOS R. B.; LIMA-NETO, BENEDITO S.; SILVA SA, JOSE L.; CARVALHO-JR, VALDEMIRO P.; BATISTA, NOUGA C.; GOI, BEATRIZ E.. Cycloalkyl-substituted salicylaldimine-nickel(II) complexes as mediators in controlled radical polymerization of vinyl acetate. Journal of Macromolecular Science Part A-Pure and Applied Chemistry, v. 56, n. 12, p. 1132-1140, . (13/11883-0, 13/10002-0)
SILVA, YAN F.; RIGA, BEATRIZ A.; DEFLON, VICTOR M.; SOUZA, JHONATHAN R.; SILVA, LEONARDO H. F.; MACHADO, ANTONIO E. H.; MAIA, PEDRO IVO S.; CARVALHO-JR VALDEMIRO, P.; GOI, BEATRIZ E.. Organometallic-mediated radical polymerization using well-defined Schiff base cobalt(II) complexes. Journal of Coordination Chemistry, v. 71, n. 22, p. 3776-3789, . (13/11883-0, 13/10002-0)
BORIM, PATRICIA; LIMA-NETO, BENEDITO S.; GOI, BEATRIZ E.; CARVALHO, JR., VALDEMIRO P.. Ru-dimethyl sulfoxide complexes as catalysts precursors for ROMP of norbornene and ATRP of methyl methacrylate. Inorganica Chimica Acta, v. 456, p. 171-178, . (13/10002-0)
MARIA BEATRIZ A. AFONSO; LUCAS G. GONÇALVES; PATRÍCIA BORIM; JOSÉ LUIZ S. SÁ; BEATRIZ E. GOI; VALDEMIRO P. CARVALHO-JR.. Atom Transfer Radical Polymerization of Methyl Methacrylate Mediated by Grubbs 1st and 2nd Generation Catalysts: Insight into the Active Species. Journal of the Brazilian Chemical Society, v. 28, n. 8, p. 1407-1413, . (13/10002-0)

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