Synthesis of Organocobalt (III) Complex for Cobalt-Mediated Radical Polymerization

• Grant number: 14/06454-6
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: June 01, 2014
• End date: May 31, 2016
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Beatriz Eleutério Goi Carvalho
• Grantee: Marina Donegá Neves
• Host 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.