To disperse SWCNTs in DNA, 0.5 ml of 2 mg/ml CoMoCAT SWCNTs (Merck, product no. 773735) in 1 x PBS (Roth, product no. 9143.2) was mixed with 1 ml of 2 mg/ml (GT)10-ssDNA (oligos ordered from Merck) in 1 x PBS. The mixture was placed in a tip-sonicator (Fischer Scientific model 120 Sonic Dismembrator) and sonicated for 40 minutes at 45 % amplitude (72 W output power, pulsed) in an ice-water bath. After sonication the sample was centrifuged at 21,000 g for 30 minutes. The supernatant was transferred to a new vial and the procedure was repeated two more times. Sample concentration was determined by absorption spectroscopy (Jasco V-770 UV-Visible/NIR Spectrophotometer) from 400 to 1350 nm with 0.5 nm steps in a 10 mm path polystyrene cuvette (Sarstedt, product no. 67.742). From full width at half maximum (FWHM) and maximum fluorescence intensity of the E11 absorption feature of (6,5)-SWCNTs the concentration was determined. Here, an oscillator strength of fc = 0.01 and 52,800 carbon atoms per SWCNT (for a 600 nm long SWCNT) were assumed .