Self-Assembly of Gold Nanoclusters on Molecularly Modified GaAs

The elaboration of closed-packed monolayers of Au55(PPh3)12Cl6 clusters on oxidized and non-oxidized GaAs surfaces is reported. The first part of this work describes the use of silanethiol modified GaAs oxide surfaces to trap 18 nm gold colloids and Au55(PPh3)12Cl6 clusters. The surfaces characteriz...

Full description

Saved in:
Bibliographic Details
Published inJournal of cluster science Vol. 14; no. 3; pp. 325 - 336
Main Authors Vidoni, Olivia, Neumeier, Stefan, Bardou, Nathalie, Pelouard, Jean-Luc, Schmid, Günter
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.09.2003
Subjects
Clusters
Gallium arsenide
Gold
Monolayers
Nanoclusters
Self-assembly
Substrates
Online AccessGet full text

Cover

More Information
Summary:The elaboration of closed-packed monolayers of Au55(PPh3)12Cl6 clusters on oxidized and non-oxidized GaAs surfaces is reported. The first part of this work describes the use of silanethiol modified GaAs oxide surfaces to trap 18 nm gold colloids and Au55(PPh3)12Cl6 clusters. The surfaces characterized by AFM measurements present high-quality coverage on a quite long range for both metallic species. The second part is devoted to the elaboration of Au55(PPh3)12Cl6 cluster monolayers on non-oxidized p-type GaAs substrates, functionalized with dithiol molecules. AFM measurements demonstrate the presence of closed-packed two-dimensional arrangements of Au55 clusters.
ISSN:1040-7278
1572-8862
DOI:10.1023/B:JOCL.0000005067.63818.39