Direct one-pot synthesis of poly(ionic liquid) nanogels by cobalt-mediated radical cross-linking copolymerization in organic or aqueous media - Archive ouverte HAL Access content directly
Journal Articles Polymer Chemistry Year : 2016

Direct one-pot synthesis of poly(ionic liquid) nanogels by cobalt-mediated radical cross-linking copolymerization in organic or aqueous media

Abstract

Nanogels of controlled kinetic chain length were synthesized by cobalt-mediated radical cross-linking copolymerization (CMRccP) involving a vinyl monomer and a divinyl cross-linker. This strategy was first validated to achieve neutral poly(vinyl acetate) nanogels by CMRccP of vinyl acetate and divinyl adipate as a cross-linker at 40 degrees C in the presence of an alkyl-cobalt(III) serving both as an initiator and a controlling agent using ethyl acetate as a solvent. Poly(ionic liquid) nanogels were then directly obtained by CMRccP of N-vinyl-3-ethyl imidazolium bromide in the presence of 1,13-divinyl-3-decyl diimidazolium bromide as a cross-linker. CMRccP experiments could be conducted either in an organic solvent using dimethyl formamide or, more interestingly, in aqueous solution, demonstrating the robustness and versatility of this one-step process. Chain extensions of PIL nanogels were also carried out in water, forming core-shell structures, thus opening new avenues in the design of functional nanogels.
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hal-01366529 , version 1 (14-09-2016)

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Mathilde Weiss-Maurin, Daniela Cordella, Christine Jérôme, Daniel Taton, Christophe Detrembleur. Direct one-pot synthesis of poly(ionic liquid) nanogels by cobalt-mediated radical cross-linking copolymerization in organic or aqueous media . Polymer Chemistry, 2016, 7 (14), pp.2521-2530. ⟨10.1039/c6py00112b⟩. ⟨hal-01366529⟩

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