Amphiphilic photosensitive dextran-g-poly(o-nitrobenzyl acrylate) glycopolymers - Archive ouverte HAL Access content directly
Journal Articles Carbohydrate Polymers Year : 2016

Amphiphilic photosensitive dextran-g-poly(o-nitrobenzyl acrylate) glycopolymers

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Abstract

Among all photosensitive monomers reported in the literature, o-nitrobenzyl acrylate (NBA) was selected in this present study. Two strategies were compared to produce azido-terminated poly(o-nitrobenzyl acrylate) (PNBA) using controlled Single Electron Transfer-Living Radical Polymerization (SET-LRP). In a parallel way, dextran (Dex) was modified by the introduction of several alkynyl-terminated hydrophobic chains. Finally, an Huisgen-type Copper (I)-catalyzed Azide-Alkyne Cycloaddition (CuAAC) click-chemistry was carried out to produce amphiphilic Dex-g-PNBA glycopolymers with different number and length of PNBA grafts. 2D DOSY H-1 NMR was used to prove the formation of such glycopolymers. Preliminary study on Dex-g-PNBA self-assembly was done by measuring the critical water content (CWC) above which Dex-g-PNBA started to auto-organize themselves to produce nano-objects. Finally, under UV irradiation, PNBA grafts turn into poly(acrylic acid) ones giving light-sensitive properties to such amphiphilic Dex-g-PNBA. Such properties were evaluated and compared with those of PNBA.
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Dates and versions

hal-01497717 , version 1 (29-03-2017)

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Mehawed Soliman, Ludovic Colombeau, Cécile Nouvel, Jérôme Babin, Jean-Luc Six. Amphiphilic photosensitive dextran-g-poly(o-nitrobenzyl acrylate) glycopolymers. Carbohydrate Polymers, 2016, 136, pp.598-608. ⟨10.1016/j.carbpol.2015.09.061⟩. ⟨hal-01497717⟩
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