Various Brush Polymers Through Ring Opening Metathesis Polymerization and Nitroxide Radical Coupling Reaction

Cerit N., Cakir N., Dag A., Sirkecioğlu O., Durmaz H., Hızal G., ...More

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol.49, no.13, pp.2850-2858, 2011 (SCI-Expanded) identifier identifier


A 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-terminated poly(ethylene glycol) (PEG) or -poly(epsilon-caprolactone) (PCL) (PEG(11)-TEMPO or PCL(23)-TEMPO) is grafted as a side chain onto a ROMP-generated polyoxanorbornene (PONB) main backbone with bromide pendant groups (PONB(20)-Br) using the NRC click reaction to yield related the brush copolymers, PONB(20)-g-PEG(11) or PONB(20)-g-PCL(23) catalyzed by Cu(I), Cu(0), and N,N,N',N '',N'''-pentamethyldiethylenetriamine in N,N-dimethylformamide at room temperature. Additionally, a ROMP-generated brush copolymer PONB(9)-g-poly(methyl methacrylate)(24) (PMMA)(24)-Cl was reacted with a PEG(11)-TEMPO or a PCL(23)-TEMPO precursor via the NRC click reaction to yield a corresponding brush terpolymer, PONB(9)-g-(PMMA(24)-b-PEG(11)) or PONB(9)-g-(PMMA(24)-b-PCL(23)) under a similar reaction condition described above. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 2850-2858, 2011