کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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189427 | 459679 | 2011 | 8 صفحه PDF | دانلود رایگان |
We report a simple, fast and reliable non-covalent route of functionalization of macroscopic carbon nanotubes (CNTs) surfaces based on the π-stacking of CNTs sidewall with fluorescein derivatives (i.e., amino- and isothiocyanate-). The electrochemiluminescent emission of Ru(bpy)32+ labels bearing –COOH and –NH2 side groups coupled with colorimetric and XPS measurements allowed to estimate the quantity of –NH2 and –NCS functions obtained. The evaluation of reactivity suggests that functionalized CNTs substrates, in particular those carrying –NCS 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.
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Journal: Electrochimica Acta - Volume 56, Issue 25, 30 October 2011, Pages 9269–9276