Switchable catalytic processes involving the copolymerization of epoxides and carbon dioxide for the preparation of block polymers Academic Article uri icon


  • © 2017 the Partner Organisations. This minireview's primary focus is to review recent studies from my research program on the development of one-pot, two-step processes for the synthesis of di- and tri-block polymers. In all of these prepared polymeric materials at least one component is a polycarbonate derived from the copolymerization of CO2 and epoxides. Synthetic methodology for the preparation of polycarbonate diols of well-defined molecular weights with narrow polydispersities are presented using (salen)CoX/onium salt catalyst systems. These polyols were subsequently utilized in the synthesis of di-and tri-block polylactide/polycarbonate or polyphosphoester/polycarbonate polymers employing organocatalysts. In addition, the introduction of these polyols to a second epoxide/CO2 copolymerization process provided block polycarbonate materials. Of particular interest, the first or second epoxide monomer incorporated into the copolymer can possess vinyl groups for postpolymerization modification by thiol-ene chemistry. These degradable polymeric materials have significant potential for use in biomedical applications.

author list (cited authors)

  • Darensbourg, D. J.

citation count

  • 17

publication date

  • January 2017