Journal ArticleDOI
Novel multifunctional polymeric materials with predominant cis microstructures derived from α‐norbornenyl macromonomer and stable macroinitiator via ring‐opening metathesis polymerization and atom transfer radical polymerization
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TLDR
In this paper, a star-like polynorbornene with high cis microstructure was obtained by using α-norbornenyl macromonomers and highly stable macroinitiators derived from an active norbornene derivative [5-(2-bromo-2-methylpropionylaminomethyl)bicyclo[2.1]hept-2.2]Abstract:
Novel star-like polymeric materials with high cis content could be obtained by using α-norbornenyl macromonomers and highly stable macroinitiators derived from an active norbornene derivative [5-(2-bromo-2-methylpropionylaminomethyl)bicyclo[2.2.1]hept-2-ene (NBBrMPAM)], which was synthesized by the reaction of norbornene methylene amine and 2-bromo-2-methylpropionyl bromide. The α-norbornenyl macromonomer (NBPMMA), which is polymethyl methacrylate containing norbornenyl end group, was prepared by atom transfer radical polymerization (ATRP) using NBBrMPAM as an initiator. Star-like polynorbornene with high cis microstructure (cis/trans = 72/28) was obtained directly by ring-opening metathesis polymerization of NBPMMA macromonomer having number molecular weight (Mn) as low as 6.39 × 103. Random ring-opening metathesis copolymerization of NBPMMA and norbornene derivative containing carbazole group (NBCbz) was carried out at 25 °C by using Ru catalyst [(Cy3P)2Cl2Ru = CHPh, Cy = cyclohexyl, Ph = phenyl]. High cis (cis/trans = 63/37) organo-soluble star-like random poly(NBPMMA-co-NBCbz) was successfully obtained with high number-average molecular weight (Mn) of 4.76 × 104 and molecular weight distribution polydispersity index of 1.78. Organo-soluble comb-shaped copolymers with MMA could be successfully obtained using ATRP macroinitiator [poly(HNBBrMPAM)] in diluted macroinitiator solution with a concentration less than 3.64 × 10−2 mol.L−1. This is the first ever attempt to prepare novel star-like organo-soluble polymeric materials with high cis microstructure via the combination of ring-opening metathesis polymerization and ATRP. Multimodification could be considered to be carried out by using the functional bromo group at the end of side chains. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 3382–3392, 2006read more
Citations
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Journal ArticleDOI
Transition metal-catalyzed living radical polymerization : toward perfection in catalysis and precision polymer synthesis
TL;DR: Catalytic Solvents: Catalyst Disproportionation 4981 2.2.1.
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Telechelic polymers by living and controlled/living polymerization methods
TL;DR: In this paper, the authors describe the general techniques for the preparation of telechelic polymers by living and controlled/living polymerization methods, including atom transfer radical polymerization, nitroxide mediated radical polymerisation, reversible addition-fragmentation chain transfer polymerization and iniferters.
Journal ArticleDOI
Efficient Synthesis of Narrowly Dispersed Brush Polymers via Living Ring-Opening Metathesis Polymerization of Macromonomers
TL;DR: In this paper, the ring-opening metathesis polymerization (ROMP) was carried out using the highly active, fast-initiating ruthenium catalyst (H2IMes)(pyr)2(Cl)2RuCHPh in THF at room temperature.
Journal ArticleDOI
Well-Defined Brush Copolymers with High Grafting Density of Amphiphilic Side Chains by Combination of ROP, ROMP, and ATRP
TL;DR: In this article, the authors reported a facile strategy for the preparation of a novel well-defined brush copolymer with two different grafts distributed on the same unit along the backbone via combination of three controlled polymerization methods, including ring-opening polymerization (ROP), ring opening metathesis polymerization, and atom transfer radical polymerization.
Journal ArticleDOI
ROMP-ATRP Block Copolymers Prepared from Monotelechelic Poly(oxa)norbornenes Using a Difunctional Terminating Agent
John B. Matson,Robert H. Grubbs +1 more
TL;DR: In this paper, a block copolymer was prepared by combining ROMP and ATRP using the fast initiating ruthenium metathesis catalyst (H_2IMes)(Cl)2(pyr)_2RuCHPh and (Z)-but-2-ene-1,4-diyl bis(2-bromopropanoate) as a terminating agent, three different monotelechelic poly(oxa)norbornenes were synthesized.
References
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BookDOI
Handbook of metathesis
TL;DR: The Role of the "Tebbe Complex" in Olefin Metathesis is discussed in this paper, where the discovery of well-defined Ruthenium Olefin metathesis Catalysts is discussed.
Journal ArticleDOI
The Synthesis of Densely Grafted Copolymers by Atom Transfer Radical Polymerization
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Journal ArticleDOI
Synthesis of Titanium and Zirconium Complexes That Contain the Tridentate Diamido Ligand, [((t-Bu-d6)N-o-C6H4)2O]2- ([NON]2-) and the Living Polymerization of 1-Hexene by Activated [NON]ZrMe2
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Journal ArticleDOI
Controlled/“Living” Radical Polymerization. Homogeneous Reverse Atom Transfer Radical Polymerization Using AIBN as the Initiator
TL;DR: In this paper, an atomic transfer radical polymerization using AIBN/CuBr2/2dNbipy as the initiating system has been successfully carried out for styrene, methyl acrylate, and methyl methacrylate.