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Issue 41, 2016
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Advantages of poly(vinyl phosphonic acid)-based double hydrophilic block copolymers for the stabilization of iron oxide nanoparticles

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Abstract

Poly(ethylene glycol)–poly(vinylphosphonic acid) block copolymers (PEG-b-PVPA) of low average molar mass were synthesized by RAFT/MADIX polymerization. Their intrinsic properties (i.e. anionic-neutral character which brings both ability to strongly interact with cations and steric stabilization) allow the one-step in situ synthesis of water-dispersible iron oxide nanoparticles with controlled size and high colloidal stability. The effect of structural properties of the polymer (chain length of PEG and PVPA blocks) on the formation and/or stabilization of nanoparticles has been evaluated. Additionally, PVPA and PAA block complexing abilities were compared and the advantage of phosphonic acid groups over carboxylic acid groups was proven. Hemocompatibility tests carried out with the DHBCs alone and DHBC/iron oxide hybrid nanoparticles revealed that the hemolysis rates observed with phosphonated copolymers were much lower than for their carboxylated analogs.

Graphical abstract: Advantages of poly(vinyl phosphonic acid)-based double hydrophilic block copolymers for the stabilization of iron oxide nanoparticles

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Supplementary files

Article information


Submitted
06 Sep 2016
Accepted
29 Sep 2016
First published
03 Oct 2016

Polym. Chem., 2016,7, 6391-6399
Article type
Paper

Advantages of poly(vinyl phosphonic acid)-based double hydrophilic block copolymers for the stabilization of iron oxide nanoparticles

K. H. Markiewicz, L. Seiler, I. Misztalewska, K. Winkler, S. Harrisson, A. Z. Wilczewska, M. Destarac and J.-D. Marty, Polym. Chem., 2016, 7, 6391
DOI: 10.1039/C6PY01558A

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