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

Miao, Jie; He, Weiwei; Zhang, Lifen; Wang, Yi; Cheng, Zhenping; Zhu, Xiulin

doi:10.1002/pola.25988

Cited by 24 publications

(15 citation statements)

References 78 publications

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“…This may be ascribed to the fact that PPh 3 can be used both as a ligand and a reducing agent. 16 As discussed above, PPh 3 played a key role in this novel polymerization system. In order to further investigate the main reason for the ligand PPh 3 on the polymerization, CV for Fe (acac) 3 with or without PPh 3 was measured in acetonitrile solution.…”

Section: Resultsmentioning

confidence: 98%

Bulk AGET ATRP of methyl methacrylate using iron(iii) acetylacetonate as a catalyst

Liu

Zhang

et al. 2014

Polym. Chem.

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In this work, polymerization of methyl methacrylate (MMA) was successfully conducted by atom transfer radical polymerization with activators generated by electron transfer (AGET ATRP) at 90°C, using iron(III) acetylacetonate (Fe(acac) 3 ) as a catalyst, ethyl alpha-bromophenylacetate (EBPA) as an initiator, ascorbic acid (AsAc) as a reducing agent and triphenyl phosphine (PPh 3 ) as a ligand. The polymerization kinetics showed that the polymerization rate (the conversion reached up to 98.1% after 60 min) was much higher than that mediated by inorganic iron salts and it was affected by the feed of the iron catalyst. Moreover, the kinetic plots were linear, and the molecular weights of the resulting polymers with molecular weight distribution around 1.2, increased linearly with monomer conversions, indicating good features of "living"/ controlled radical polymerizations. The end-functionality of the polymers was confirmed by 1 H NMR spectroscopy and a chain extension experiment.

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Section: Resultsmentioning

confidence: 98%

Bulk AGET ATRP of methyl methacrylate using iron(iii) acetylacetonate as a catalyst

Liu

Zhang

et al. 2014

Polym. Chem.

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“…239 (0)). 252 Notably, monomer and ligand can also act as efficient reducing agents in the iron(III)-mediated ATRP with phosphorus ligand. 38, 188-192 20 Another possible mechanism for this type of ATRP is that FeX 3 disproportionates into the Fe(III) anion and Fe(III) cation in the presence of phosphorus ligand, and the cation interacts with phosphorus ligand to form Fe(II) complex which is active catalyst for ATRP.…”

Section: Aget Atrpmentioning

confidence: 99%

Iron-catalyzed atom transfer radical polymerization

2015

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In the last two decades, metal-catalyzed controlled radical polymerization (CRP), or atom transfer radical 5 polymerization (ATRP) has become a ubiquitous tool for the facile synthesis of a wide of materials with specific macromolecular architectures. The complex plays an important role in ATRP, and for this purpose researchers put a great deal of effort on studying the effect of various complexes on polymerization. However, one of disadvantages of copper complex which is the most extensively studied catalyst system in ATRP is the contamination of polymers resulted from a high concentration of stable catalyst. 10 Efficiently and economically removing the catalyst from the resultant polymers will open the way to a wide variety of new functional polymers for specialty applications, especially for large-scale industrial manufacture. Iron-based catalysts have attracted particular attention because of their low toxicity, low cost, abundance, and environmental friendliness, and thus many iron catalysts have been designed for ATRP. This article reviews the preparation of polymers using iron-catalyzed atom transfer radical 15 polymerization, and is organized according to: (a) mechanistic considerations; (b) Iron complexes and ligand types.

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“…Recently, there have been a number of papers in which zero valence metals were used for polymeriza tions of a wide range of vinyl monomers [104][105][106][107]. For example, the novel catalytic system based on the combination of Fe(0) powder and CuBr 2 catalyzed the controlled radical polymerizations of MMA and sty rene [104].…”

Section: (16)mentioning

confidence: 99%

“…In [105], the CRP of the water soluble monomer ethylene glycol methyl ether methacrylate was con ducted with the use of a low toxicity catalytic system composed of a mixture of Fe(0) and the complex of FeCl 3 ⋅ 6H 2 O with PPh 3 . Effects of temperature and the concentration of the catalyst on the kinetics of poly merization and the molecular weight characteristics of the polymer were studied.…”

Section: (16)mentioning

confidence: 99%

Iron-based catalytic systems in atom-transfer controlled-radical-polymerization processes

Гришин

2015

Polym. Sci. Ser. C

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The literature data about the use of catalytic systems and compositions based on iron and its com plexes for the controlled synthesis of polymers via the atom transfer mechanism are generalized and ana lyzed. The effects of the oxidation number of a metal atom, the ligand environment, the structure of a radical initiator, the activating additives, and other factors on the molecular weight characteristics of the polymers and the kinetics of vinyl polymerization are considered.

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

Cited by 24 publications

References 78 publications

Bulk AGET ATRP of methyl methacrylate using iron(iii) acetylacetonate as a catalyst

Bulk AGET ATRP of methyl methacrylate using iron(iii) acetylacetonate as a catalyst

Iron-catalyzed atom transfer radical polymerization

Iron-based catalytic systems in atom-transfer controlled-radical-polymerization processes

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