AGET ATRP

Hu, Z., Shen, X., Qiu, H., Lai, G., Wu, J., and Li, W. 2009. AGET ATRP of methyl methacrylate with poly(ethylene glycol) (PEG) as solvent and TMEDA as both ligand and reducing agent. European Polymer Journal, 45 2313-8. 

Poly(n-butyl acrylate) brushes were synthesized by activators generated by electron transfer (AGET) ATRP of BA from 2-bromoisobutyrate functionalized silica particles in miniemulsion imder conditions similar to those reported previously, BA Si02-Br CuBr2 BPMODA ascorbic acid = 600 1 0.5 0.5 ... 

Esteves ACC, Bombalski L, Trindade T, et al. (2007) Polymer grafting from Cds quantum dots via AGET ATRP in miniemulsion. Small 3 1230-1236... 

Oh, J.K. Dong, H. Zhang, R. Matyjaszewski, K. Schlaad, H. Preparation of nanoparticles of double-hydrophilic PEO-PHEMA block copolymers by AGET ATRP in inverse miniemulsion. J. Polym. Sci. A Polym. Chem. 2007, 45 (21), 4764-4772. 

Oh, J.K. Min, K. Matyjaszewski, K. Preparation of poly(oligo(ethylene glycol) monomethyl ether methacrylate) by homogeneous aqueous AGET ATRP. Macromolecules 2006, 39 (9), 3161—3167. 

Fig. 17 Synthesis of PEG-sheU/polystyrene-coie nanoparticles by AGET ATRP in miniemulsion from a PEG-b-polystyrene-Br macroinitiator [35]...

Figure 16.7 Synthesis of cationic NGs for delivery of siRNA and pDNA using AGET ATRP.

D02 Dong, H. and Matyjaszewski, K., Thermally responsive P(M(EO)2MA-co-OEOMA) copolymers via AGET ATRP in miniemulsion. Macromolecules, 43, 4623, 2010. 

Sun, Y. Liu, W., Synthesis and Properties of Triblock Copolymers Containing PDMS via AGET ATRP. Polym. Bull 2012, 68,1815-1829. 

Fig. 12 Synthetic strategy for the preparation of QD-polymer nanocomposites by AGET ATRP in miniemulsion Reprinted from [258], Copyright 2007, with permission from John Wiley...

Sun, H., et al., 2015. Synthesis of well-defined amphiphilie block copolymers via AGET ATRP used for hydrophilic modification of PVDF membrane. Journal of Applied Polymer Science. 132(24) n/a-n/a. 

Besides normal ATRP, newly reported reverse ATRP and AGET ATRP are attracting much attention. Reverse ATRP is a convenient method to reduce the oxidation problems. [77] In a reverse ATRP, the transition metal complexes in higher oxidation state (e.g. Cu(II) complex) are initially added to the reaction system. Radicals are generated by decomposition of a conventional free radical initiator. The components of the initial system are less sensitive to air, so this technique is more compatible with commercial processes. [78] Simms et a/.[79] reported a successful reverse ATRP of nBMA in miniemulsion polymerization. The cationic surfactant CTAB was employed in the system with a concentration as low as 1 wt % with respect to monomer. 

Min et a/. [83] also carried out a comprehensive examinations of normal ATRP, reverse ATRP, and AGET ATRP in a microemulsion system. The MMA was used as the model monomer, Brij98 as the... 

SCHEME 8.4 Schematic illustration of the processes involved in the graft copolymerization of DMAEMA from PVDF main chains via AGET-ATRP, preparation of PVDF-g-PDMAEMA membrane by phase inversion, and quaternization of PVDF-g-PDMAEMA membrane by propargyl bromide to produce PVDF-g-PQDMAEMA membrane with pendant aUcyne groups, covalent immobilization of hyperbranched polymer HPG-Nj or PEI-Nj onto the PVDF-g-PQDMAEMA membrane surface via surface alkyne-azide click reaction. PVDF, poly(vinylidene fluoride) DMAEMA, 2-(V, V-dimethylamino)ethyl methacrylate VC = L-ascorbic acid PMDETA = V,V,M,V, A"-pentamethyl diethylene triamine HPG-N3 = az/hyperbranched polyglycerols PEI-N3 = azirfo-polyethylenimine. Reprinted with permission from Reference 114. Copyright 2013 American Chemical Society. 

A further advantage of AGET ATRP is that by adding an excess of reducing agent, the reaction can be successfully carried out in the presence of small amormts of air, thereby simplifying setup procedirres. 

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