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Issue 20, 2011
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Depletion induced vesicle-to-micelle transition from self-assembled rod–coil diblock copolymers with spherical magnetic nanoparticles

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Abstract

This article describes the structural transition undergone by a vesicle forming diblock copolymer made of a hydrophobic poly(γ-benzyl-L-glutamate) sequence with helical secondary structure and of a hydrophilic poly[2-(dimethylamino)ethyl methacrylate] block when inserting hydrophobic iron oxide nanoparticles to impart magnetic properties in addition to pH- and temperature-responsiveness. Dispersed within the hydrophobic rod-like polymer domains, the quasi-spherical particles experience depletion attraction, leading to microphase separation and finally to transition from vesicles to hybrid core–shell micelles. Such combination of self-assembly with excluded-volume effects, also present in living systems and giving rise to such a large structural diversity and functionality, can be integrated in materials science towards the design of original nanostructures.

Graphical abstract: Depletion induced vesicle-to-micelle transition from self-assembled rod–coil diblock copolymers with spherical magnetic nanoparticles

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Publication details

The article was received on 10 Apr 2011, accepted on 01 Jun 2011 and first published on 14 Jul 2011


Article type: Paper
DOI: 10.1039/C1SM05638G
Soft Matter, 2011,7, 9744-9750

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    Depletion induced vesicle-to-micelle transition from self-assembled rod–coil diblock copolymers with spherical magnetic nanoparticles

    W. Agut, D. Taton, A. Brûlet, O. Sandre and S. Lecommandoux, Soft Matter, 2011, 7, 9744
    DOI: 10.1039/C1SM05638G

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