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Additional info for Polymer and Polymer-Hybrid NaNoParticles From Synthesis to Biomedical Applications
Linear pentablock copolymers of the type ABCBA and having the detailed structure poly(methyl methacrylate)-b-poly(acrylic acid)-b-poly(2-vinylpyridine)-b-poly(acrylic acid)-b-poly(methylmethacrylate) (PMMA-b-PAA-b-P2VP-b-PAA-b-PMMA) were synthesized by anionic polymerization (Tsitsilianis et al. 2008). A difunctional initiator was used together with three sequential monomer additions, according to monomer reactivity, in order to give the desired double-hydrophilic polyampholyte. The copolymer possessed hydrophobic PMMA outer block and pH-sensitive hydrophilic PAA and P2VP inner blocks and showed rich self-assembly aqueous solutions.
2010b). An amphiphilic graft copolymer with PEO as main chain and poly(methyl acrylate) grafted chains was synthesized by using anionic polymerization and ATRP (Li et al. 2006b). The backbone was obtained by anionic copolymerization of an ethyl vinyl ether protected glycidol monomer, that is, 2,3-epoxypropyl-1-ethoxyethyl ether (EPEE), and EO, using diphenylmethyl potassium as the initiator. 18 Synthesis of doubly grafted PCL-g-(P4VP-PEO) copolymers. was treated with acid in order to deprotect the hydroxyl groups in the EPEE segments.
Ethoxyethyl-protected hydroxyl at each chain end was the key point of the particular synthesis. It was produced by polymerization of EO with potassium 2-(1-ethoxyethoxy)ethoxide as the initiator. 17. Next, azide end-functionalized polystyrene (PS) (N3-PS) was prepared via ATRP polymerization of styrene and transformation of the Br end group of the resulting PS-Br into an azide by reaction with NaN3. In the last step of the synthesis, the N3-PS was coupled to the alkyne functionality of the heterofunctional PEO, while tert-butyl methacrylate was polymerized from the –Br end of the PEO in the presence of Cu(0) and PMDETA.