Assembly of Gold Nanoparticles on Functionalized Si(100) Surfaces through Pseudorotaxane Formation

The assembly of gold nanoparticles (AuNPs) on a hydrogenated Si(100) surface, mediated by a series of hierarchical and reversible complexation processes, is reported. The proposed multi‐step sequence involves a redox‐active ditopic guest and suitable calix[n]arene‐based hosts, used as functional org...

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Bibliographic Details
Published in:Chemistry : a European journal 2013-06, Vol.19 (24), p.7999-8006
Main Authors: Boccia, Alice, D'Orazi, Fabio, Carabelli, Elena, Bussolati, Rocco, Arduini, Arturo, Secchi, Andrea, Marrani, Andrea G., Zanoni, Robertino
Format: Article
Language:English
Subjects:
Assembly
calixarenes
Chemistry
Complexation
Controlled release
electrochemistry
Gold
Monolayers
Nanoparticles
Scanning electron microscopy
surface chemistry
Surface reactions
X-ray photoelectron spectroscopy
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Summary:The assembly of gold nanoparticles (AuNPs) on a hydrogenated Si(100) surface, mediated by a series of hierarchical and reversible complexation processes, is reported. The proposed multi‐step sequence involves a redox‐active ditopic guest and suitable calix[n]arene‐based hosts, used as functional organic monolayers of the two inorganic components. Surface reactions and controlled release of AuNPs have been monitored by application of XPS, atomic force microscopy (AFM), field‐emission scanning electron microscopy (FESEM) and electrochemistry. Exploring the surface: The assembly of gold nanoparticles (AuNPs) on a hydrogenated Si surface is mediated by a series of hierarchical complexation processes. The multi‐step sequence involves a redox‐active ditopic guest and suitable functional organic monolayers of the two inorganic components (see figure). Surface reactions and controlled release of AuNPs were monitored.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201204318