title: Development of new atom transfer radical polymerization system by iron (III)-metal salts without using any external initiator and reducing agent.
abstract: Atom transfer radical polymerization (ATRP) catalyzed by high oxidation state metal salts of FeX3 is developed for the first time in the absence of both external initiator and reducing agent. Methyl methacrylate (MMA) and styrene are polymerized successfully using FeX3 /Phosphorous ligands with well-controlled molecular weight distributions (=1.5). The molecular weight of the polymers increases with monomer consumption with the progress of time and the polymerization behaviors show a decent ATRP trend. Activators and initiators are suggested to generate in situ by the addition reaction of MMA and one equivalent of FeX3 . The PMMA synthesized from without-initiator system is characterized by (1) H, (13) C and DEPT (distortionless enhancement by polarization transfer nuclear magnetic resonance) nuclear magnetic resonance spectroscopy. Chain extension and copolymerization experiments prove the livingness of the obtained polymer.
authors: School of Chemical Engineering, Yeungnam University, 214-1 Daedong, Gyeongsan, Gyeongbuk, 712-749, Republic of Korea.
authors: Mohd Yusuf
authors: MY
authors: Khan
authors: Xiangxiong
authors: X
authors: Chen
authors: Seung Woo
authors: SW
authors: Lee
authors: Seok Kyun
authors: SK
authors: Noh
mesh_terms: D002384:Catalysis; D005290:Ferric Compounds / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D020366:Methylmethacrylate / Q000737:chemistry*; D010084:Oxidation-Reduction; D019904:Polymethyl Methacrylate / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D005290:Ferric Compounds; D020366:Methylmethacrylate; D019904:Polymethyl Methacrylate
keywords: atom transfer radical polymerization; iron (III); ligands; living radical polymerization; salts