Cp2TiCl2/Zn-Catalyzed Living Radical Polymerization of Styrene Initiated from Benzoyl Peroxide

摘要

The ability of living radical polymerization (LRP) to control molecular weight and polydispersity via a reversible termination of propagating chains has enabled its wide applications in the synthesis of complex macromolecular structures. Late transition paramagnetic metal systems promoting the persistent radical effect have proven very successful in LRP. Accordingly, atom transfer radical polymerization (ATRP) is accomplished by Cu, Ni, Fe, or Ru complexes in conjunction with ligands and additives while metal-catalyzed dissociation-combination (DC) is mediated by Co,Te, Sb and Mo. These systems typically employ only activated halides or thermal initiators. A wider selection of initiator functionalities as well as the introduction of multifunctional catalytic systems will facilitate the development of single-step multi-component, macromolecular synthesis.