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Binding of fullerene C-60 to gold surface functionalized by self-assembled monolayers of 8-amino-1-octane thiol: a structure elucidation

Sahoo, Rashmi R. and Patnaik, Archita (2003) Binding of fullerene C-60 to gold surface functionalized by self-assembled monolayers of 8-amino-1-octane thiol: a structure elucidation. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 268 (1). pp. 43-49. ISSN 0021-9797

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Abstract

The formation of self-assembled chemisorbed monolayers (SAM) of 8-amino-1-undecane thiol functionalized with fullerene C-60 on gold, has been studied by contact angle measurements, Fourier transform infrared-attenuated total reflection (FTIR-ATR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). A two-step procedure was followed consisting of the chemisorption of amine-terminated organosulfur compounds, followed by their reaction with fullerenes at the solid-liquid interface. Covalent binding of fullerenes to these attachment layers was accessed by FTIR-ATR and XPS. ATR showed several major features in the C60 skeleton ring vibration region along with all the characteristic features of the aminothiol. With increase in carbon to sulfur ratio, appearance of a C1s shake-up satellite peak due to the characteristic pi-pi* transition of the C-60 backbone and a low binding energy N1s feature confirmed the -NH2 binding at the 6,6 double bond of the C60 cage. Possible explanations for these experimental findings are discussed. (C) 2003 Elsevier Inc. All rights reserved.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:7120
Deposited By:JNCASR
Deposited On:28 Oct 2009 05:21
Last Modified:28 Oct 2009 05:21

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