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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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Article information


Submitted
15 Apr 2012
Accepted
01 Jun 2012
First published
04 Jun 2012

Faraday Discuss., 2012,159, 201-209
Article type
Paper

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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