Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone
dc.contributor.advisor | Casagrande Júnior, Osvaldo de Lázaro | pt_BR |
dc.contributor.author | Klitzke, Joice Sandra | pt_BR |
dc.date.accessioned | 2013-11-27T01:47:18Z | pt_BR |
dc.date.issued | 2013 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/81562 | pt_BR |
dc.description.abstract | A series of new Al(III) complexes bearing silyl ortho-substituted 2,6- bis(naphtholate)-pyridine tridentate ligands ({ONOSiR3}2-, SiR3 = SiPh3, SiMe2tBu) and two monomeric Y(III) complexes bearing a new cumyl ortho-substituted 2,6- bis(phenolate)-pyridine tridentate ligand {ONOMe,Cumyl}2- have been prepared and structurally characterized in solution and in the solid-state. Preliminary studies on the catalytic performances of the compounds in the ROP of racemic lactide and β- butyrolactone are described. Also, details of the reactions of chiral Al-lactate and -{β- alkoxy ester} complexes which are close models/mimics of the first intermediates and active species involved in the initiation and propagation steps of the ROP of lactides and β-lactones with stoichiometric amounts of lactide. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.rights | Open Access | en |
dc.subject | Polimerização por abertura de anel | pt_BR |
dc.subject | Complexos metálicos | pt_BR |
dc.subject | Catalisadores | pt_BR |
dc.title | Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone | pt_BR |
dc.type | Tese | pt_BR |
dc.identifier.nrb | 000904565 | pt_BR |
dc.degree.grantor | Universidade Federal do Rio Grande do Sul | pt_BR |
dc.degree.department | Instituto de Química | pt_BR |
dc.degree.program | Programa de Pós-Graduação em Química | pt_BR |
dc.degree.local | Porto Alegre, BR-RS | pt_BR |
dc.degree.date | 2013 | pt_BR |
dc.degree.level | doutorado | pt_BR |
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Exact and Earth Sciences (5129)Chemistry (891)