Electrostatic assembly of gold colloidal nanoparticles on organosilane monolayers patterned by microcontact electrochemical conversion.
Langmuir
; 22(18): 7819-24, 2006 Aug 29.
Article
em En
| MEDLINE
| ID: mdl-16922569
ABSTRACT
A new approach is introduced for electrostatically guided adsorption of colloidal nanoparticles onto a patterned self-assembled monolayer (SAM) with feature sizes ranging from nm to mm. Patterning of the adsorption templates is realized by electric-field-induced anodic oxidation of aminosilane SAM using an ink-free method. In this versatile method, both "positive" and "negative" type pattern transfers are possible. The chemically converted patterns are induced by localized electrical fields on the microcontacted areas, and the patterning resolution is insensitive to the diffusion of oxidizing agents because of the self-limiting oxidation kinetics, thereby enabling high-resolution, large-scale parallel patterning.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Langmuir
Assunto da revista:
QUIMICA
Ano de publicação:
2006
Tipo de documento:
Article