Nano Archive

pH sensitive breathing of clay within the polyelectrolyte matrix

Chaturbedy, Piyush and Jagadeesan, Dinesh and Eswaramoorthy, Muthusamy (2010) pH sensitive breathing of clay within the polyelectrolyte matrix. ACS Nano, 4 (10). pp. 5921-5929. ISSN 1936-0851

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Official URL: http://pubs.acs.org/doi/abs/10.1021/nn100700b

Abstract

Stimuli-responsive organic−inorganic hybrid spheres were synthesized by coating the colloidal polystyrene spheres with polyelectrolyte-protected aminoclay, Mg phyllo(organo)silicate layers in a layer-by-layer method. The clay layers are sandwiched between the polyelectrolyte layers. The aminoclay swells in water due to protonation of amino groups, and the degree of swelling depends on the pH of the medium. As a result, the hybrid spheres undergo a size change up to 60% as the pH is changed from 9 to 4. The stimuli-responsive property of the hybrid spheres was used for the release of ibuprofen and eosin at different pH.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:11093
Deposited By:JNCASR
Deposited On:14 Sep 2011 05:42
Last Modified:14 Sep 2011 05:42

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