Figure 4.

(a) Geometric definition of π – π stacking; d < 4 Å and ϕ < 20°. (b) Fraction of (TAT)4 nucleobases stacked on (6,5) SWCNT surface at increasing ssDNA loading. (c) Fraction of nucleobases stacked on the SWCNT surface for the 4 different ssDNA sequences. Error bars denote on standard deviation.