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Electrostatic Self-assembly of Metal and Semiconductor Nanoparticles in Polyelectrolytes: Assembly Dynamics, and Electrochemical Behavior

Published online by Cambridge University Press:  10 February 2011

Mariezabel Markarian ,
Jad Jaber ,
Yan Xin ,
Sara Ghannoum  and
Lara I. Halaoui
Mariezabel Markarian
Affiliation:
Department of Chemistry, American University of Beirut, Beirut 110236, Lebanon;
Jad Jaber
Affiliation:
Department of Chemistry, American University of Beirut, Beirut 110236, Lebanon;
Yan Xin
Affiliation:
National High-Magnetic Field Laboratory, Florida State University, Tallahassee 32310, FL, USA.
Sara Ghannoum
Affiliation:
Department of Chemistry, American University of Beirut, Beirut 110236, Lebanon;
Lara I. Halaoui*
Affiliation:
Department of Chemistry, American University of Beirut, Beirut 110236, Lebanon;
*
*Corresponding Author: [email protected]
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Abstract

The electrostatic self-assembly of hetero-nanostructured multilayers of metal and semiconductor nanoparticles in polyelectrolytes, the self-assembly dynamics, and electrochemistry at the assembled films is reported. Polyacrylate-capped Pt (<d>=2.5 ± 0.6 nm) and Q-CdS nanoparticles (<d>=3.6 ± 0.5 nm) were assembled in poly(diallyldimethylammonium chloride). The nanoparticle assembly dynamics is shown to be a function of the nanoparticle solution ionic strength and its composition. Electrochemical studies at Pt nanoparticles in PDDA reveal that charge hopping is feasible through the nanocomposite film, and that the catalytic activity of the nanoparticles is retained in the assembled structures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 775: Symposium P – Self-Assembled Nanostructured Materials , 2003 , P11.4
Copyright
Copyright © Materials Research Society 2003

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