Helen Cathcart and Jonathan N Coleman*, Quantitative comparison of ultracentrifuged and diluted single walled nanotube, Chemical Physics Letters, 474, 1-3, 2009, 122-126
Series/Report no.:
Chemical Physics Letters 474 1-3
Abstract:
We have carried out a quantitative comparison of the dispersion quality for ultracentrifuged and diluted surfactant-stabilised single walled nanotube dispersions. We have characterised these dispersions at a set concentration of not, vert, similar30 μg.mL-1 by absorption and photoluminescence spectroscopy as well as by statistical atomic force microscopy. Both the ultracentrifuged and the diluted samples contained significant quantities of bundles as well as individual nanotubes. The ultracentrifuged sample contained not, vert, similar 4 times more individualised SWNTs than the diluted sample with partial concentrations of individual nanotubes of 4.8 and 1.1 μg.mL-1 respectively.
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