Reversible thermal switching of aqueous dispersibility of multiwalled carbon nanotubes

O'Driscoll, Luke J. and Welsh, Daniel J. and Bailey, Steven W. D. and Visontai, David and Frampton, Harry and Bryce, Martin R. and Lambert, Colin J. (2015) Reversible thermal switching of aqueous dispersibility of multiwalled carbon nanotubes. Chemistry - A European Journal, 21 (10). pp. 3891-3894. ISSN 0947-6539

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Abstract

Easily reversible aqueous dispersion/precipitation of multiwalled carbon nanotubes (MWNTs) has been demonstrated using small-molecule non-ionic pyrene-based surfactants, which exhibit lower critical solution temperature (LCST) phase behaviour. The MWNTs are dispersed by means of non-covalent interactions. The dispersibility can be switched "off" (i.e., MWNTs precipitated) upon heating and switched "on" (i.e., MWNTs re-dispersed) upon cooling and merely swirling the sample at room temperature, that is, under very mild conditions. This effect is also observed under high ionic strength conditions with NaCl in the aqueous phase.

Item Type:
Journal Article
Journal or Publication Title:
Chemistry - A European Journal
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600
Subjects:
ID Code:
75435
Deposited By:
Deposited On:
09 Sep 2015 06:33
Refereed?:
Yes
Published?:
Published
Last Modified:
19 Aug 2020 02:36