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Using a chitosan nanolayer as an efficient pH buffer to protect pH-sensitive supramolecular assemblies

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Abstract

It is attractive to control the properties of macro objects and films by employing simple nanolayer composites, as in the case of nanoarchitectured Layer-by-Layer (LbL) coating. In this paper, we use chitosan as a surface-based pH buffer to protect adsorbed supramolecular fibres from pH-mediated disassembly. Protons are generated on a titania surface under illumination at 405 nm leading to an appreciable pH change on the surface. We find that supramolecular polymers that are highly sensitive to pH change will not disassemble after irradiation if a nanolayer of chitosan is present. We propose that chitosan can be used as an efficient pH-responsive protective layer for pH sensitive soft materials.

Graphical abstract: Using a chitosan nanolayer as an efficient pH buffer to protect pH-sensitive supramolecular assemblies

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Publication details

The article was received on 21 Apr 2017, accepted on 04 Jul 2017 and first published on 04 Jul 2017


Article type: Paper
DOI: 10.1039/C7CP02618H
Citation: Phys. Chem. Chem. Phys., 2017, Advance Article
  • Open access: Creative Commons BY license
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    Using a chitosan nanolayer as an efficient pH buffer to protect pH-sensitive supramolecular assemblies

    D. V. Andreeva, A. Kollath, N. Brezhneva, D. V. Sviridov, B. J. Cafferty, H. Möhwald and E. V. Skorb, Phys. Chem. Chem. Phys., 2017, Advance Article , DOI: 10.1039/C7CP02618H

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