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Volume 159, 2012
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Inorganic salts direct the assembly of charged nanoparticles into composite nanoscopic spheres, plates, or needles

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Abstract

Oppositely charged, nanoionic nanoparticles can act as “universal surfactants” regulating the growth of ionic microcrystals. This phenomenon derives from a subtle interplay between crystal growth and cooperative electrostatic adsorption of the nanoparticles onto crystal faces. In addition to the electrostatic interactions acting in the system, the nature of salts is also important in the sense that for the same Debye screening length, different salts can mediate formation of markedly different assemblies including supraspheres, nanoneedles, or nanoplates. The method can be further extended to coat non-ionic crystals with appropriately functionalized nanoparticles.

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Publication details

The article was received on 15 Apr 2012, accepted on 01 Jun 2012 and first published on 04 Jun 2012


Article type: Paper
DOI: 10.1039/C2FD20074K
Citation: Faraday Discuss., 2012,159, 201-209
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    Inorganic salts direct the assembly of charged nanoparticles into composite nanoscopic spheres, plates, or needles

    B. A. Grzybowski, B. Kowalczyk, I. Lagzi, D. Wang, K. V. Tretiakov and D. A. Walker, Faraday Discuss., 2012, 159, 201
    DOI: 10.1039/C2FD20074K

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