Living Radical Polymerization with Designed Metal Complexes

摘要

This paper discusses recent developments in the metal-catalyzed living radical polymerization with designed metal complexes in our laboratory. The design was directed to increasing the catalytic activity and to widening the applicability to a variety of monomers by several methods. They include ruthenium(Ⅱ) complexes with an electron-donating aminoindenyl ligand, a neutral and labile ethylene ligand, a hemilabile bidentate P,N-ligand, and a dinuclear iron(Ⅰ) complex. These novel complexes were characterized by NMR, cyclic voltammetry, and X-ray crystallography. Most of them had a lower redox potential than the previous ruthenium(Ⅱ) and iron(Ⅱ) complexes and proved effective in a fast living radical polymerization.