Jump to main content
Jump to site search

Issue 1, 2013
Previous Article Next Article

Reversible swelling transitions in stimuli-responsive layer-by-layer films containing block copolymer micelles

Author affiliations

Abstract

We present a new nanoporous multilayer system with a reversible pH-triggered swelling transition. Using the layer-by-layer approach, pH-responsive block copolymer micelles with a hydrophobic core, a weak polyanion shell and a strong polycation corona formed from an ABC triblock terpolymer are included within multilayer films. The approach of complexing the strong polycationic corona with a strong polyanion leads to the creation of novel double-end-tethered polyelectrolyte brush structures confined between the hydrophobic micellar cores and the interpolyelectrolyte complexes. The swelling degree, morphology as well as the mechanical properties of the coatings are reversibly tunable by the solution pH due to the ionization-induced swelling of the pH-sensitive polyelectrolyte-brush-like shell of the incorporated micelles resulting in large-scale volumetric changes of the film. Moreover, controlling the internal film architecture by the number of deposition steps allows tuning the properties of the porous multilayers such as the density of incorporated micelles, the porosity, and the equilibrium swelling degree to more than 1200%.

Graphical abstract: Reversible swelling transitions in stimuli-responsive layer-by-layer films containing block copolymer micelles

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 Jun 2012, accepted on 05 Sep 2012 and first published on 06 Sep 2012


Article type: Edge Article
DOI: 10.1039/C2SC20836A
Citation: Chem. Sci., 2013,4, 325-334
  •   Request permissions

    Reversible swelling transitions in stimuli-responsive layer-by-layer films containing block copolymer micelles

    J. Gensel, I. Dewald, J. Erath, E. Betthausen, Axel. H. E. Müller and A. Fery, Chem. Sci., 2013, 4, 325
    DOI: 10.1039/C2SC20836A

Search articles by author

Spotlight

Advertisements