Understanding Carbon Nanotube Voltammetry: Distinguishing Adsorptive and Thin Layer Effects via "Single-Entity" Electrochemistry.

The number of layers of b-MWCNTs were estimated (SI, section 4 ), assuming that the nanotubes were arranged in a closed packing arrangement at the GC electrode surface, and were found to be 21, 30, 42, and 50 layers of b-MWCNTs for a drop-cast of 70, 98, 140, and 170 μg cm –2 , respectively. Given the assumption made with respect to the packing, these numbers are likely to be significant underestimates since the layers will in reality likely be made of randomly oriented tubes.

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