Effect of Hydrophilic Monomer Distribution on Self-Assembly of a pH-Responsive Copolymer: Spheres, Worms and Vesicles from a Single Copolymer Composition.

Zhang, Junliang; Farias-Mancilla, Barbara; Kulai, Ihor; Hoeppener, Stephanie; Lonetti, Barbara; Prévost, Sylvain; Ulbrich, Jens; Destarac, Mathias; Colombani, Olivier; Schubert, Ulrich S; Guerrero-Sanchez, Carlos; Harrisson, Simon

Zhang, Junliang; Farias-Mancilla, Barbara; Kulai, Ihor; Hoeppener, Stephanie; Lonetti, Barbara; Prévost, Sylvain; Ulbrich, Jens; Destarac, Mathias; Colombani, Olivier; Schubert, Ulrich S; Guerrero-Sanchez, Carlos; Harrisson, Simon.

Afiliación

Zhang J; Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China.
Farias-Mancilla B; Laboratory of Organic and Macromolecular Chemistry (IOMC) and Jena Center for Soft Matter (JCSM), Friedrich Schiller University of Jena, Humboldtstrasse 10 (IOMC) and Philosophenweg 7 (JCSM), 07743, Jena, Germany.
Kulai I; IMRCP UMR5623, Université de Toulouse, 118, route de Narbonne, 31062, Toulouse Cedex 9, France.
Hoeppener S; IMRCP UMR5623, Université de Toulouse, 118, route de Narbonne, 31062, Toulouse Cedex 9, France.
Lonetti B; Laboratory of Organic and Macromolecular Chemistry (IOMC) and Jena Center for Soft Matter (JCSM), Friedrich Schiller University of Jena, Humboldtstrasse 10 (IOMC) and Philosophenweg 7 (JCSM), 07743, Jena, Germany.
Prévost S; IMRCP UMR5623, Université de Toulouse, 118, route de Narbonne, 31062, Toulouse Cedex 9, France.
Ulbrich J; Institut Laue-Langevin, 71 Avenue des Martyrs, Grenoble, France.
Destarac M; Laboratory of Organic and Macromolecular Chemistry (IOMC) and Jena Center for Soft Matter (JCSM), Friedrich Schiller University of Jena, Humboldtstrasse 10 (IOMC) and Philosophenweg 7 (JCSM), 07743, Jena, Germany.
Colombani O; IMRCP UMR5623, Université de Toulouse, 118, route de Narbonne, 31062, Toulouse Cedex 9, France.
Schubert US; Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS, Le Mans Université/ CNRS, Avenue Olivier Messiaen, 72085, Le Mans Cedex 9, France.
Guerrero-Sanchez C; Laboratory of Organic and Macromolecular Chemistry (IOMC) and Jena Center for Soft Matter (JCSM), Friedrich Schiller University of Jena, Humboldtstrasse 10 (IOMC) and Philosophenweg 7 (JCSM), 07743, Jena, Germany.
Harrisson S; Laboratory of Organic and Macromolecular Chemistry (IOMC) and Jena Center for Soft Matter (JCSM), Friedrich Schiller University of Jena, Humboldtstrasse 10 (IOMC) and Philosophenweg 7 (JCSM), 07743, Jena, Germany.

Angew Chem Int Ed Engl ; 60(9): 4925-4930, 2021 Feb 23.

Article en En | MEDLINE | ID: mdl-32997426

ABSTRACT

ABSTRACT

A 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 pHâ5 and vesicles at pHâ4. These assemblies were characterized by dynamic light scattering, cryo-transmission electron microscopy and small angle neutron scattering.

Palabras clave

copolymer; gradient copolymer; self-assembly; sequence control; stimuli-responsive

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2021 Tipo del documento: Article