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Synthesis of organocobalt (iii) complex for cobalt-mediated radical polymerization

Grant number: 14/06454-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): June 01, 2014
Effective date (End): May 31, 2016
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Beatriz Eleutério Goi
Grantee:Marina Donegá Neves
Home Institution: Faculdade de Ciências e Tecnologia (FCT). Universidade Estadual Paulista (UNESP). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil

Abstract

New organocobalt (III) complex will be synthesized to catalyze/regulate cobalt-mediated radical polymerization. The proposal is to systematically evaluate different combinations of ancillary ligands in the coordination sphere of cobalt 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 reaction CMRP. The investigated ligands will be three different diimines and one alkyl radical simultaneously coordinated to the cobalt center to polymerize vinyl acetate via CMRP. The purpose is to provide base for understanding the performance of the catalysts, as well as the formation of reaction intermediates involved in each catalysis and then, design catalytic systems that combine reactivity and selectivity for synthesis of new materials with different architecture obtained by CMRP.