Jump to main content
Jump to site search

Issue 9, 2015
Previous Article Next Article

Cucurbit[8]uril directed stimuli-responsive supramolecular polymer brushes for dynamic surface engineering

Author affiliations

Abstract

In situ modification of surfaces with thin layers of polymers is of growing interest as adjustment of surface properties can be made on demand. We present herein a supramolecular ‘grafting to’ polymer brush via the recognition of surface-bound cucurbit[8]uril (CB[8]) rotaxanes towards end-functionalised polyethylene glycol (PEG). This dynamic supramolecular method represents advantages over traditional approaches, which employ covalent bond formation in the ‘grafting to’ process. Brush properties can be easily modified post-preparation by exchanging the polymers with small molecules in a controlled, reversible manner. Including both redox- and light-responsive guests in a single rotaxane entity, the CB[8]-mediated preparation of the polymer brush offers unique opportunities to switch the brush composition efficiently. While the PEG brushes are well hydrated in a good solvent (water) and stretch away from the surface, they collapse in a poor solvent (toluene), leading to the formation of a dense layer on the surface. This collapsed conformation protects the heteroternary complexes of CB[8]-rotaxane from dissociation and maintains the attachment of polymers on the surface.

Graphical abstract: Cucurbit[8]uril directed stimuli-responsive supramolecular polymer brushes for dynamic surface engineering

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Apr 2015, accepted on 22 Jun 2015 and first published on 06 Jul 2015


Article type: Edge Article
DOI: 10.1039/C5SC01496D
Citation: Chem. Sci., 2015,6, 5303-5310
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Cucurbit[8]uril directed stimuli-responsive supramolecular polymer brushes for dynamic surface engineering

    C. Hu, F. Tian, Y. Zheng, C. S. Y. Tan, K. R. West and O. A. Scherman, Chem. Sci., 2015, 6, 5303
    DOI: 10.1039/C5SC01496D

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements