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    Self-assembly behavior of well-defined polymethylene-block-poly(ethylene glycol) copolymers in aqueous solution

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    Type
    Article
    Authors
    Alkayal, Nazeeha cc
    Zapsas, Georgios
    Bilalis, Panagiotis cc
    Hadjichristidis, Nikos cc
    KAUST Department
    Chemical Science Program
    KAUST Catalysis Center (KCC)
    Physical Science and Engineering (PSE) Division
    Polymer Synthesis Laboratory
    Date
    2016-09-22
    Online Publication Date
    2016-09-22
    Print Publication Date
    2016-12
    Permanent link to this record
    http://hdl.handle.net/10754/622332
    
    Metadata
    Show full item record
    Abstract
    A series of well-defined amphiphilic polymethylene-b-poly(ethylene glycol) (PM-b-PEG) diblock copolymers, with different hydrophobic chain length, were synthesized by combining Diels-Alder reaction with polyhomologation. The successful synthetic procedure was confirmed by size-exclusion chromatography (SEC) and 1H NMR spectroscopy. These block copolymers self-assembled into spherical micelles in aqueous solutions and exhibit low critical micelle concentration (CMC) of 2–4 mg/mL, as determined by fluorescence spectroscopy using pyrene as a probe. Measurements of the micelle hydrodynamic diameters, performed by dynamic light scattering (DLS), cryo-transmission electron microscopy (cryo-TEM) and atomic force microscopy (AFM), revealed a direct dependence of the micelle size from the polymethylene block length.
    Citation
    Alkayal N, Zapsas G, Bilalis P, Hadjichristidis N (2016) Self-assembly behavior of well-defined polymethylene-block-poly(ethylene glycol) copolymers in aqueous solution. Polymer 107: 415–421. Available: http://dx.doi.org/10.1016/j.polymer.2016.09.074.
    Sponsors
    Research reported in this publication supported by King Abdullah University of Science and Technology. The assistance of Dr Rachid Sougrat, KAUST Advanced Nanofabrication Imaging and Characterization Core Laboratory, in cryo-TEM experiments is gratefully acknowledged.
    Publisher
    Elsevier BV
    Journal
    Polymer
    DOI
    10.1016/j.polymer.2016.09.074
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S0032386116308734
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.polymer.2016.09.074
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

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