Poly(acrylic acid) with disulfide bond for the elaboration of pH-responsive brush surfaces

Van Camp, Wim;Du Prez, filip;Alem, Halima;Demoustier, Sophie;Duwez, Anne-Sophie;et.al.
(2010) European Polymer Journal — Vol. 46, n° 2, p. 195-201 (2010)

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Authors
  • Van Camp, WimGhent University
    Author
  • Du Prez, filipGhent University
    Author
  • Alem, HalimaUCLouvain
    Author
  • Demoustier, SophieUCLouvain
    Author
  • Duwez, Anne-SophieUniversité de Liège - ULg
    Author
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Abstract
We report on a new route for the facile preparation of pH-responsive tethered brushes on metallic surfaces, starting from poly(acrylic acid) (PAA) containing a disulfide (S–S) bond (PAA–S–S–PAA). First, atom transfer radical polymerization (ATRP) of 1-ethoxyethyl acrylate (EEA) with a disulfide-containing initiator was performed to obtain the poly(EEA) precursor polymer (PEEA–S–S–PEEA). Deprotection of PEEA by a heating step resulted in the desired PAA chains without any further purification. The brushes, obtained by the ‘grafting to’ of PAA–S–S–PAA onto gold, were then characterized by atomic force microscopy in water at various pH values. The results evidence a large collapsing/swelling capacity.
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Van Camp, W., Du Prez, f., Alem, H., Demoustier, S., Willet, N., Grancharov, G., & Duwez, A.-S. (2010). Poly(acrylic acid) with disulfide bond for the elaboration of pH-responsive brush surfaces. European Polymer Journal, 46(2), 195-201. https://doi.org/10.1016/j.eurpolymj.2009.11.005 (Original work published 2010)