Highly Efficient Synthesis of Low Polydispersity Core Cross-Linked Star Polymers by Ru-Catalyzed Living Radical Polymerization
Tor Kit Goh, Satoshi Yamashita, Kotaro Satoh, Anton Blencowe, Masami Kamigaito, Greg G Qiao
MACROMOLECULAR RAPID COMMUNICATIONS | WILEY-V C H VERLAG GMBH | Published : 2011
The efficient formation of low polydispersity core cross-linked star (CCS) polymers via controlled/living radical polymerization (LRP) and the arm-first approach was found to be dependent on the mediating catalyst system. The Ru catalyst, Ru(Ind)Cl(PPh₃)₂ Cat. 1, and tertiary amine co-catalyst were used to synthesize highly living poly(methyl methacrylate) (PMMA) macroinitiators, which were then linked together with ethylene glycol dimethacrylate (EGDMA) to form PMMA(arm)PEGDMA(core) CCS polymers. The quantitative and near-quantitative synthesis of CCS polymers were observed for low to moderate molecular weight macroinitiators (M(n) = 8 and 20 kDa), respectively. Lower conversions were obse..View full abstract
Awarded by Australian Research Council (ARC)
Awarded by Japan Society for the Promotion of Science
This work was supported by the Australian Research Council (ARC)-DuPont linkage grant (LP0348853), the Grant-in-Aid for Young Scientists (S) (no. 19675003) from the Japan Society for the Promotion of Science, the Global COE Program "Elucidation of Design of Materials and Molecular Functions," the Australian Government's Endeavour Awards, the University of Melbourne PORES program and the ARC Nanotechnology Network.