Figure 6.

Azimuthally averaged SAXS profiles of nanotubes formed by a DNA minor groove-binding ligand DB921 in aqueous solutions containing halide salts. Modeling of the data provides the mean inner and outer diameters ($D_I$ and $D_O$, respectively) shown in the legend and polydispersity (∼0.05). Mean length of the tubes is many microns which is not covered by the q range of the measurement. The diameter and wall thickness of the tubes are larger in NaBr-containing solution as compared to that in NaCl solution. The peaks at higher q corresponds to the lateral packing of DB921 along the tube walls. Adapted from R. Mizuta et al. [39] ©the Royal Society of Chemistry 2018.