Sorting Populations of Larger Diameter Nanotubes

The separation of nanotube populations into subsets on the basis of chirality, diameter, enantiomeric handedness, or electronic type is leading to the realization of vastly improved nanotube properties. Due to the increased number of combinatorial possibilities for chiralities at larger diameters however, most solution processing has focused on the separation of relatively small diameter nanotube populations, i.e. < 1.1 nm. This has led to a lack of separated samples of larger diameter chiralities, that should have additional applications. In this presentation, examples of isolating sub-populations of larger diameter nanotubes (1.2 nm < d < 2 nm) will be given, and the resulting properties discussed.