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Get Free AccessA series of copolymers containing 50 mol % acrylic acid (AA) and 50 mol % butyl acrylate (BA) but with differing composition profiles ranging from an AA-BA diblock copolymer to a linear gradient poly(AA-grad-BA) copolymer were synthesized and their pH-responsive self-assembly behavior was investigated. While assemblies of the AA-BA diblock copolymer were kinetically frozen, the gradient-like compositions underwent reversible changes in size and morphology in response to changes in pH. In particular, a diblock copolymer consisting of two random copolymer segments of equal length (16 mol % and 84 mol % AA content, respectively) formed spherical micelles at pH >5, a mix of spherical and wormlike micelles at pH 5 and vesicles at pH 4. These assemblies were characterized by dynamic light scattering, cryo-transmission electron microscopy and small angle neutron scattering.
Junliang Zhang, Bárbara Farías-Mancilla, Ihor Kulai, Stephanie Hoeppener, Barbara Lonetti, Sylvain Prévost, Jens Ulbrich, Mathias Destarac, Olivier Colombani, Ulrich Sigmar Schubert, Carlos Guerrero‐Sánchez, Simon Harrisson (2020). Effect of Hydrophilic Monomer Distribution on Self‐Assembly of a pH‐Responsive Copolymer: Spheres, Worms and Vesicles from a Single Copolymer Composition. , 60(9), DOI: https://doi.org/10.1002/anie.202010501.
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Type
Article
Year
2020
Authors
12
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1002/anie.202010501
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