Structural control of gold nanoparticles self-assemblies by layer-by-layer process

This work presents a novel way to introduce gold nanoparticles (Au NPs) in a multilayer polymer produced by the layer-by-layer (LbL) assembling technique. The technique chosen shows that, depending on the pH used, different morphological structures can be obtained from monolayer or bilayer Au NPs. T...

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Bibliographic Details
Published in:Nanoscale 2011-01, Vol.3 (4), p.1717-1723
Main Authors: Machado, Giovanna, Feil, Adriano F, Migowski, Pedro, Rossi, Liane, Giovanela, Marcelo, Crespo, Janaina da S, Miotti, Leonardo, Sortica, Maurício A, Grande, Pedro L, Pereira, Marcelo B, Correia, Ricardo R B
Format: Article
Language:English
Subjects:
Gold
Gold - chemistry
Macromolecular Substances - chemistry
Materials Testing
Molecular Conformation
Multilayers
Nanocomposites
Nanomaterials
Nanoparticles
Nanostructure
Nanostructures - chemistry
Nanostructures - ultrastructure
Particle Size
Self assembly
Surface Properties
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Summary:This work presents a novel way to introduce gold nanoparticles (Au NPs) in a multilayer polymer produced by the layer-by-layer (LbL) assembling technique. The technique chosen shows that, depending on the pH used, different morphological structures can be obtained from monolayer or bilayer Au NPs. The MEIS and RBS techniques allowed for the modelling of the interface polymer-NPs, as well as the understanding of the interaction of LbL system, when adjusting the pH in weak polyelectrolytes. The process reveals that the optical properties of multilayer systems could be fine-tuned by controlling the addition of metallic nanoparticles, which could also modify specific polarization responses.
ISSN:2040-3364
2040-3372
DOI:10.1039/c0nr01023e