We report a simple, fast and reliable non-covalent route of functionalization of macroscopic carbon nanotubes (CNTs) surfaces based on the pi-stacking of CNTs sidewall with fluorescein derivatives (i.e., amino-and isothiocyanate-). The electrochemiluminescent emission of Ru(bpy)(3)(2+) labels bearing -COOH and -NH(2) side groups coupled with colorimetric and XPS measurements allowed to estimate the quantity of -NH(2) and -N=C=S functions obtained. The evaluation of reactivity suggests that functionalized CNTs substrates, in particular those carrying -N=C=S groups, are suitable to covalently bind probe molecules such as proteins and oligonucleotides, thus opening up the possibility of future application in genomics and proteomics fields. (C) 2011 Elsevier Ltd. All rights reserved.

Facile functionalization by pi-stacking of macroscopic substrates made of vertically aligned carbon nanotubes: Tracing reactive groups by electrochemiluminescence

ZANARINI, SIMONE;PAOLUCCI, FRANCESCO;MARCACCIO, MASSIMO;PRODI, LUCA;
2011

Abstract

We report a simple, fast and reliable non-covalent route of functionalization of macroscopic carbon nanotubes (CNTs) surfaces based on the pi-stacking of CNTs sidewall with fluorescein derivatives (i.e., amino-and isothiocyanate-). The electrochemiluminescent emission of Ru(bpy)(3)(2+) labels bearing -COOH and -NH(2) side groups coupled with colorimetric and XPS measurements allowed to estimate the quantity of -NH(2) and -N=C=S functions obtained. The evaluation of reactivity suggests that functionalized CNTs substrates, in particular those carrying -N=C=S groups, are suitable to covalently bind probe molecules such as proteins and oligonucleotides, thus opening up the possibility of future application in genomics and proteomics fields. (C) 2011 Elsevier Ltd. All rights reserved.
Zanarini S.; Vinante M.; Pasquardini L.; Sanginario A.; Giorcelli M.; Bianco S.; Gerbaldi C.; Nair J. R.; Lunelli L.; Vanzetti L.; Paolucci F.; Marcaccio M.; Prodi L.; Tagliaferro A.; Pederzolli C.; Demarchi D.; Civera P.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/104953
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