Epoxides as reducing agents for low-catalyst-concentration atom transfer radical polymerization.
Activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP) conditions utilizing a low concentration of catalyst are successfully applied for the preparation of well-defined poly(glycidyl methacrylate) without the addition of external reducing agents. The living character of polymerization is evidenced by successful chain extensions with methyl methacrylate and methyl acrylate, again, in the absence of additional reducing agents, yielding block copolymers. The epoxide groups in glycidyl methacrylate or the corresponding polymer can serve as an intrinsic reducing agent to continuously regenerate the Cu(I) -based ATRP activator from the Cu(II) halide complex present in the systems. The reactivity of various epoxides in the reduction of the Cu(II) Br2 complex of tris(2-pyridylmethyl)amine is compared.
Department of Chemistry and Center for Drug Discovery, Design, and Delivery in Dedman College, Southern Methodist University, 3215 Daniel Avenue, Dallas, TX, 75275, USA.
Shannon R
SR
Woodruff
Department of Chemistry and Center for Drug Discovery, Design, and Delivery in Dedman College, Southern Methodist University, 3215 Daniel Avenue, Dallas, TX, 75275, USA.
Brad J
BJ
Davis
Department of Chemistry and Center for Drug Discovery, Design, and Delivery in Dedman College, Southern Methodist University, 3215 Daniel Avenue, Dallas, TX, 75275, USA.
Nicolay V
NV
Tsarevsky
D002384:Catalysis; D004852:Epoxy Compounds / Q000737:chemistry*; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D058105:Polymerization; D019163:Reducing Agents / Q000737:chemistry*
D004852:Epoxy Compounds; D019163:Reducing Agents
atom transfer radical polymerization (ATRP); block copolymers; catalysis; controlled radical polymerization; epoxides