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Binding of fullerene C60 to gold surface functionalized by self-assembled monolayers of 8-amino-1-octane thiol: a structure elucidation by Rashmi R. Sahoo; Archita Patnaik is a Chemistry article available to read on EtoBox.

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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 C 60 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 π-π \* transition of the C 60 backbone and a low binding energy N1s feature confirmed the -NH 2 binding at the 6,6 double bond of the C 60 cage. Possible explanations for these experimental findings are discussed.

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Author

Rashmi R. Sahoo; Archita Patnaik

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9797)

Published

2003

Language

EN

Field

Chemistry (Physical Sciences)