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Title: Probing carboxylic acid groups in replaced and mixed self-assembled monolayers by individual ionized dendrimer molecules: An atomic force microscopy study
Authors: Zhang, H ×
Grim, Kees
Tiu, DJ
Vosch, Tom
De Feyter, Steven
Wiesler, UM
Berresheim, AJ
Mullen, K
Van Haesendonck, Christian
Vandamme, Nele
De Schryver, Frans #
Issue Date: Jan-2002
Publisher: Amer chemical soc
Series Title: Langmuir vol:18 issue:5 pages:1801-1810
Abstract: Polyphenylene dendrimer molecules, G2Td(COOH)(16), were ionized (G2 ions) and then adsorbed on a carboxylic acid (COOH) group terminated self-assembled monolayer (SAM) on a Au substrate through the linkage with Cu2+ ions. The individual G2 ions were observed by noncontact atomic force microscopy (NCAFM). The strong interaction between the G2 and Cu2+ ions, the latter of which are preadsorbed on the COOH SAM, led to a compression or deformation of the SAM and resulted in a decreased height of the G2 ions measured by NCAFM as compared to a theoretical model of the dendrimer molecules. The present method offers an approach to bind dendrimer molecules to a solid substrate and to study the nanoscale behavior of two kinds of thiol molecules in replaced and mixed SAMs.
URI: 
ISSN: 0743-7463
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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