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Issue 10, 2013
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SET-LRP synthesis of novel polyallene-based well-defined amphiphilic graft copolymers in acetone

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Abstract

A series of polyallene-based well-defined amphiphilic graft copolymers consisting of hydrophobic poly(6-methyl-1,2-heptadiene-4-ol) (PMHDO) backbone and hydrophilic poly(2-(dimethylamino)ethyl acrylate) (PDMAEA) side chains, was synthesized by the combination of living coordination polymerization and single-electron transfer living radical polymerization (SET-LRP). A double-bond-containing PMHDO backbone with pendant hydroxyls was prepared via [(η3-allyl)NiOCOCF3]2-initiated living coordination polymerization of a hydroxyl-containing allene derivative, 6-methyl-1,2-heptadiene-4-ol (MHDO). The pendant hydroxyls in the homopolymer were then treated with 2-chloropropionyl chloride to provide the PMHDO-Cl macroinitiator. Finally, the target PMHDO-g-PDMAEA well-defined graft copolymers were constructed through the grafting-from technique via SET-LRP of 2-(dimethylamino)ethyl acrylate (DMAEA) in acetone, a nonpolar solvent, initiated by the macroinitiator using CuCl/Me6TREN as catalytic system. The narrow molecular weight distributions (Mw/Mn ≤ 1.18) and kinetics experiment showed the controllability of SET-LRP graft copolymerization of DMAEA. The critical micelle concentrations (cmc) of PMHDO-g-PDMAEA amphiphilic graft copolymers in aqueous solution were determined by fluorescence probe technique and the dependence of cmc on pH or salinity were also investigated. Micellar morphologies were visualized using transmission electron microscopy.

Graphical abstract: SET-LRP synthesis of novel polyallene-based well-defined amphiphilic graft copolymers in acetone

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Article information


Submitted
27 Jan 2013
Accepted
04 Mar 2013
First published
05 Mar 2013

Polym. Chem., 2013,4, 3132-3139
Article type
Paper

SET-LRP synthesis of novel polyallene-based well-defined amphiphilic graft copolymers in acetone

G. Lu, Y. Li, H. Guo, W. Du and X. Huang, Polym. Chem., 2013, 4, 3132
DOI: 10.1039/C3PY00145H

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