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Self-assembled nanostructures: preparation, characterization, thermal, optical and morphological characteristics of amphiphilic diblock copolymers based on poly(2-hydroxyethyl methacrylate-block-N-phenylmaleimide)

Authors

  • Guadalupe del C Pizarro,

    Corresponding author
    • Department of Chemistry, Technological Metropolitan University, Santiago, Chile
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  • Oscar G Marambio,

    1. Department of Chemistry, Technological Metropolitan University, Santiago, Chile
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  • Manuel Jeria-Orell,

    1. Department of Chemistry, Technological Metropolitan University, Santiago, Chile
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  • Daniela T Valdés,

    1. Department of Chemistry, Technological Metropolitan University, Santiago, Chile
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  • Kurt E Geckeler

    Corresponding author
    1. Department of Nanobio Materials and Electronics (WCU), Gwangju Institute of Science and Technology (GIST), Gwangju, South Korea
    2. Laboratory of Applied Macromolecular Chemistry, School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, South Korea
    • Department of Chemistry, Technological Metropolitan University, Santiago, Chile
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Correspondence to: Guadalupe del C. Pizarro, Department of Chemistry, Technological Metropolitan University, J. P. Alessandri 1242, Santiago, Chile. E-mail: gpizarro@utem.cl, pizarroguadalupe048@gmail.com. Kurt E. Geckeler, Laboratory of Applied Macromolecular Chemistry, School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, South Korea. E-mail: keg@gist.ac.kr

Abstract

A series of well-defined amphiphilic poly[(2-hydroxyethyl methacrylate)-block-(N-phenylmaleimide)] diblock copolymers containing hydrophilic and hydrophobic blocks of different lengths were synthesized by atom transfer radical polymerization. The properties of the diblock copolymers and their ability to form large compound spherical micelles are described. Their optical, morphological and thermal properties and self-assembled structure were also investigated. The chemical structure and composition of these copolymers have been characterized by elemental analysis, Fourier transform infrared, 1H NMR, UV–visible and fluorescence spectroscopy, and size exclusion chromatography. Furthermore, the self-assembly behavior of these copolymers was investigated by transmission electron microscopy and dynamic light scattering, which indicated that the amphiphilic diblock copolymer can self-assemble into micelles, depending on the length of both blocks in the copolymers. These diblock copolymers gave rise to a variety of microstructures, from spherical micelles, hexagonal cylinders to lamellar phases. © 2013 Society of Chemical Industry

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