Jump to main content
Jump to site search

Issue 6, 2008
Previous Article Next Article

pH-Switchable supramolecular “sliding” gels based on polyrotaxanes of polyethyleneimine-block-poly(ethylene oxide)-block-polyethyleneimine block copolymer and α-cyclodextrin: synthesis and swelling behaviour

Author affiliations

Abstract

A new type of pH-switchable supramolecular sliding gel has been synthesized, based on polyrotaxanes of polyethyleneimine-block-poly(ethylene oxide)-block-polyethyleneimine block copolymer and α-cyclodextrin. The three dimensional supramolecular network was obtained by an inter-molecular crosslinking reaction between CDs belonging to two different polyrotaxanes via1,1′-carbonyldiimidazole. Higher gel equilibrium swelling has been observed in acidic medium than in basic medium. This behaviour is explained by the ionization of EI units leading to electrostatic repulsion of the PEI blocks.

Graphical abstract: pH-Switchable supramolecular “sliding” gels based on polyrotaxanes of polyethyleneimine-block-poly(ethylene oxide)-block-polyethyleneimine block copolymer and α-cyclodextrin: synthesis and swelling behaviour

Back to tab navigation

Publication details

The article was received on 04 Mar 2008, accepted on 28 Mar 2008 and first published on 22 Apr 2008


Article type: Communication
DOI: 10.1039/B803670E
Citation: Soft Matter, 2008,4, 1165-1168
  •   Request permissions

    pH-Switchable supramolecular “sliding” gels based on polyrotaxanes of polyethyleneimine-block-poly(ethylene oxide)-block-polyethyleneimine block copolymer and α-cyclodextrin: synthesis and swelling behaviour

    K. Karaky, C. Brochon, G. Schlatter and G. Hadziioannou, Soft Matter, 2008, 4, 1165
    DOI: 10.1039/B803670E

Search articles by author

Spotlight

Advertisements