Journal ArticleDOI
Controlled Radical Polymerization of Methacrylic Monomers in the Presence of a Bis(ortho-chelated) Arylnickel(II) Complex and Different Activated Alkyl Halides
Reads0
Chats0
TLDR
In this article, a novel class of homogeneous nickel(II) catalysts, denoted as Ni(NCN)Br, is reported to mediate in the presence of activated alkyl halides, e.g., CCl4 or α-halocarbonyl compounds, and remarkably enough, poly(methyl methacrylate) (PMMA) with molecular weight up to at least 105 g/mol was synthesized in a controlled fashion.Abstract:
A novel class of homogeneous nickel(II) catalysts, i.e [Ni{o,o‘(CH2NMe2)2C6H3}Br], denoted as Ni(NCN‘)Br, is reported to mediate in the presence of activated alkyl halides, e.g., CCl4 or α-halocarbonyl compounds, a well-controlled radical polymerization of methacrylic monomers [methyl and n-butyl methacrylate), (MMA, n-BuMA)] at rather low temperatures (<100 °C). The number-average molecular weight of the polymer gradually increased with the monomer conversion and was inversely proportional to the initiator concentration of alkyl halides. The molecular weight distribution (MWD) remained very narrow during the whole course of the polymerization (MWD < 1.3). All the experimental data including a successful block copolymerization (n-BuMA-b-MMA) experiment were in agreement with a living polymerization process, and remarkably enough, poly(methyl methacrylate) (PMMA) with molecular weight up to at least 105 g/mol was synthesized in a controlled fashion. Increased thermal stability of the PMMA is a further indi...read more
Citations
More filters
Journal ArticleDOI
Simultane doppelte lebende Polymerisationen – ein neuer einstufiger Zugang zu Block- und Pfropf-Copolymeren
David Mecerreyes,Georges Moineau,Philippe Dubois,Robert Jérôme,James L. Hedrick,Craig J. Hawker,Eva Malmström,Mikael Trollsas +7 more
Journal ArticleDOI
Synthesis of liquid crystalline–amorphous block copolymers by combination of CFRP and ATRP mechanisms
I. Ersin Serhatlı,Turgay Kacar +1 more
TL;DR: In this paper, a block copolymer of liquid crystalline 6-(4-cyanobiphenyl-4′-oxy) hexyl acrylate (LC6) and styrene (St) was obtained by the combination of two different free-radical polymerization mechanisms, namely conventional free radical polymerization (CFRP) and atom transfer radical polymerisation (ATRP).
Patent
"Living" free radical polymerization process
TL;DR: In this article, a new class of free radical initiators based on alkylperoxydiarylborane and its derivatives is presented, represented by the general formula.
Patent
Atom transfer radical polymerization under biologically compatible conditions
TL;DR: In this article, the authors described methods for conducting controlled grafting-from radical polymerizations from biomolecules under conditions that are biologically compatible, and provided biomolecule-polymer conjugates with highly controlled structures and narrow polydispersities.
Journal ArticleDOI
Synthesis of tri-block copolymers through reverse atom transfer radical polymerization of methyl methacrylate using polyurethane macroiniferter
TL;DR: In this paper, reverse atom transfer radical polymerization was successfully used for the first time to synthesize tri-block copolymers using tetraphenylethane-based polyurethane as a macroiniferter and copper(II) halide as a catalyst.
References
More filters
Journal ArticleDOI
Controlled/"living" radical polymerization. atom transfer radical polymerization in the presence of transition-metal complexes
Journal ArticleDOI
Polymerization of Methyl Methacrylate with the Carbon Tetrachloride/Dichlorotris- (triphenylphosphine)ruthenium(II)/Methylaluminum Bis(2,6-di-tert-butylphenoxide) Initiating System: Possibility of Living Radical Polymerization
Journal ArticleDOI
Narrow molecular weight resins by a free-radical polymerization process
TL;DR: In this paper, free radical polymerization was used to obtain polystyrene and poly(styrene-co-butadiene) with narrow polydispersity (1.19-1.36) in the presence of 2,2,6, 6,6-tetramethyl-1-piperidinyloxy using benzoyl peroxide as initiator
Journal ArticleDOI
Controlled Living Radical Polymerization - Halogen Atom-Transfer Radical Polymerization Promoted by a Cu(I)Cu(II) Redox Process
TL;DR: An extension of ATRA to atom transfer radical addition, ATRP, provided a new and efficient way to conduct controlled/living radical polymerization as mentioned in this paper, using a simple alkyl halide, R-X (X = Cl and Br), as an initiator and a transition metal species complexed by suitable ligand(s), M t n /L x, e.g., CuX/2,2'-bipyridine, as a catalyst.
Related Papers (5)
Controlled/"living" radical polymerization. atom transfer radical polymerization in the presence of transition-metal complexes
Living radical polymerization of styrene initiated by arenesulfonyl chlorides and CuI(bpy)nCl
Virgil Percec,Bogdan Barboiu +1 more