Cu(II)-Mediated Atom Transfer Radical Polymerization of Methyl Methacrylate via a Strategy of Thermo-Regulated Phase-Separable Catalysis in a Liquid/Liquid Biphasic System: Homogeneous Catalysis, Facile Heterogeneous Separation, and Recycling

2014 ◽  
Vol 35 (18) ◽  
pp. 1615-1621 ◽  
Author(s):  
Jinlong Pan ◽  
Bingjie Zhang ◽  
Xiaowu Jiang ◽  
Lifen Zhang ◽  
Zhenping Cheng ◽  
...  
2001 ◽  
Vol 79 (5-6) ◽  
pp. 529-535 ◽  
Author(s):  
François Simal ◽  
Dominique Jan ◽  
Lionel Delaude ◽  
Albert Demonceau ◽  
Marie-Rose Spirlet ◽  
...  

New complexes of the type RuCl2(p-cymene)L where the ligand L is either a phosphine or a stable triazolinylidene carbene have been tested and compared to the Grubbs' benzylidene complex RuCl2(=CHPh)(PCy3)2 as catalyst precursors for the controlled atom transfer radical polymerization (ATRP) of methyl methacrylate and of various para-substituted styrenes. Kinetic data and Hammett ρ constants are reported, as well as the X-ray structure of the ortho-metallated triazolinylidene-ruthenium(II) complex RuCl(p-cymene)[1,2-phenylene[3,4-diphenyl-1H-1,2,4-triazol-1-yl-5(4H)-ylidene]].Key words: ruthenium, carbene, chelate complex, homogeneous catalysis, atom transfer radical polymerization.


1997 ◽  
Vol 30 (7) ◽  
pp. 2190-2193 ◽  
Author(s):  
David M. Haddleton ◽  
Christina B. Jasieczek ◽  
Michael J. Hannon ◽  
Andrew J. Shooter

2018 ◽  
Vol 18 (3) ◽  
pp. 537 ◽  
Author(s):  
Melahat Göktaş ◽  
Guodong Deng

Poly(methyl methacrylate)-b-poly(N-isopropylacrylamide) [PMMA-b-PNIPAM] block copolymers were obtained by a combination of redox polymerization and atom transfer radical polymerization (ATRP) methods in two steps. For this purpose, PMMA macroinitator (ATRP-macroinitiator) was synthesized by redox polymerization of methyl methacrylate and 3-bromo-1-propanol using Ce(NH4)2(NO3)6 as a catalyst. The synthesis of PMMA-b-PNIPAM block copolymers was carried out by means of ATRP of ATRP-macroinitiator and NIPAM at 60 °C. The block copolymers were obtained in high yield and high molecular weight. The characterization of products was accomplished by using multi instruments and methods such as nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, gel permeation chromatography, and thermogravimetric analysis.


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