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. 2012 Sep 27;101(13):133702. doi: 10.1063/1.4756794

Figure 2.

Figure 2

(a) Normalized absorbance curves showing the stability of CNT-FBI coronas for both SWNTs (blue diamonds) and MWNTs (red circles) over 10 h. (b) Fluorescence intensities of free, labeled FBI supernatants obtained from pelleting SWNT-FBI (blue curves, 10, 40, and 80 μg/ml of the SWNTs) and MWNT-FBI coronas (red curves, 100, 400, and 800 μg/ml of the MWNTs). The fluorescence intensities decreased with increased nanotube concentration for both samples. (c) Stern-Volmer plots show quenching coefficients of 32.7 and 8.8 for SWNT-FBI and MWNT-FBI coronas, respectively. I0 and If: fluorescence intensities of the labeled FBI control and the CNT-labeled FBI mixture, respectively. CNT concentrations: 0.02 to 0.08 mg/ml.