AGET ATRP of water-soluble PEGMA: Fast living radical polymerization mediated by iron catalyst

2012 ◽  
Vol 50 (11) ◽  
pp. 2194-2200 ◽  
Author(s):  
Jie Miao ◽  
Weiwei He ◽  
Lifen Zhang ◽  
Yi Wang ◽  
Zhenping Cheng ◽  
...  
Keyword(s):  
Radical Polymerization ◽  
Iron Catalyst ◽  
Living Radical Polymerization ◽  
Water Soluble ◽  
Aget Atrp

scholarly journals Aqueous Photo-Living Radical Polymerization of Sodium Methacrylate Using a Water-Soluble Nitroxide Mediator

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Eri Yoshida
Keyword(s):  
Molecular Weight ◽  
Radical Polymerization ◽  
Linear Correlation ◽  
Linear Increase ◽  
Living Radical Polymerization ◽  
Water Soluble ◽  
Molecular Weights ◽  
Molecular Weight Distributions ◽  
Weight Distributions ◽  
Sodium Methacrylate

The aqueous photo-living radical polymerization of sodium methacrylate (NaMA) was attained using 2,2′-azobis2-methyl-N-[1,1-bis(hydroxymethyl)-2-hydroxyethyl]-propionamide (V-80) as the initiator and 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl (HTEMPO) as the mediator in the presence of (4-fluorophenyl)diphenylsulfonium triflate (FS). The polymerization was carried out in water at room temperature by irradiation using a high-pressure mercury lamp. Whereas the polymerization by V-80 and/or FS in the absence of HTEMPO produced polymers with very high molecular weights and broad molecular weight distributions, the HTEMPO-mediated polymerization provided still lower-molecular-weight distributions using both V-80 and FS. The first-order time-conversion plots had an induction period up to 2.5 h; however, they thereafter showed a linear increase. The conversion-molecular weight plots also exhibited a linear correlation. A linear correlation was also obtained for the plots of the molecular weights versus the reciprocal of the initiator concentration. Based on these three correlations, it was found that the HTEMPO-mediated photopolymerization proceeded by a living mechanism.

SET-LRP of NIPAM in water via in situ reduction of Cu(ii) to Cu(0) with NaBH4

2016 ◽  
Vol 7 (4) ◽  
pp. 933-939 ◽  
Author(s):  
Mikhail Gavrilov ◽  
Timothy J. Zerk ◽  
Paul V. Bernhardt ◽  
Virgil Percec ◽  
Michael J. Monteiro
Keyword(s):  
Electron Transfer ◽  
Radical Polymerization ◽  
Living Radical Polymerization ◽  
Water Soluble ◽  
New Method ◽  
Single Electron Transfer ◽  
In Situ Reduction ◽  
Water Soluble Polymers ◽  
Soluble Polymers

The direct and quantitative reduction of the air-stable Cu(ii)Br2/Me6TREN to Cu(0) by NaBH4 represents a new method for the aqueous single electron transfer-living radical polymerization (SET-LRP) of water soluble polymers.

Copper(0)-mediated living radical polymerization of acrylonitrile: SET-LRP or AGET-ATRP

2010 ◽  
Vol 48 (23) ◽  
pp. 5439-5445 ◽  
Author(s):  
Xiao-Hui Liu ◽  
Gui-Bao Zhang ◽  
Bai-Xiang Li ◽  
Yun-Gang Bai ◽  
Yue-Sheng Li
Keyword(s):  
Radical Polymerization ◽  
Living Radical Polymerization ◽  
Aget Atrp

An atom transfer radical polymerization system: catalyzed by an iron catalyst in PEG-400

2015 ◽  
Vol 17 (1) ◽  
pp. 271-278 ◽  
Author(s):  
Mingqiang Ding ◽  
Xiaowu Jiang ◽  
Jinying Peng ◽  
Lifen Zhang ◽  
Zhenping Cheng ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Iron Catalyst ◽  
Atom Transfer ◽  
Polyethylene Glycol 400 ◽  
Aget Atrp ◽  
Peg 400 ◽  
Highly Efficient ◽  
Polymerization System

A robust and highly efficient iron catalyzed AGET ATRP of MMA in non-toxic polyethylene glycol 400 (PEG-400) without any additional ligands was successfully conducted.

scholarly journals RAFT polymers for protein recognition

2010 ◽  
Vol 6 ◽  
Author(s):  
Alan F Tominey ◽  
Julia Liese ◽  
Sun Wei ◽  
Klaus Kowski ◽  
Thomas Schrader ◽  
...  
Keyword(s):  
Radical Polymerization ◽  
Living Radical Polymerization ◽  
Water Soluble ◽  
Protein Recognition ◽  
Linear Polymers ◽  
Basic Proteins ◽  
New Family ◽  
Raft Polymers

A new family of linear polymers with pronounced affinity for arginine- and lysine-rich proteins has been created. To this end, N-isopropylacrylamide (NIPAM) was copolymerized in water with a binding monomer and a hydrophobic comonomer using a living radical polymerization (RAFT). The resulting copolymers were water-soluble and displayed narrow polydispersities. They formed tight complexes with basic proteins depending on the nature and amount of the binding monomer as well as on the choice of the added hydrophobic comonomer.

AGET ATRP of Acrylamide in Aqueous Media

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Ying Tan ◽  
Qingbo Yang ◽  
Dekun Sheng ◽  
Xuefeng Su ◽  
Kun Xu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Ascorbic Acid ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Aqueous Media ◽  
Reducing Agent ◽  
Water Soluble ◽  
Aget Atrp ◽  
First Order ◽  
Initiation System

AbstractThe recently developed initiation system, the activator generated by electron transfer (AGET) was used in atom transfer radical polymerization (ATRP) to synthesize well-controlled polyacrylamide in aqueous media at 25°C. The different reducing agents involved ascorbic acid and glucosa; well-controlled polymers were obtained when ascorbic acid was used as water-soluble reducing agent. The polymerizations targeted at degrees of polymerization in the range of 400 resulted in polymers with low polydispersity indices. Moreover, first order plots were linear.

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