  A facile route to prepare the nanotubes from rod-like mesogens dissolved in
typical organic solvents is reported. For selected types of chiral rod-like
molecules, both enantiomers as well as the racemic mixtures formed the
nanotubes by slow evaporation from a solution, regardless of the solvent,
concentration or deposition type. Obtained supramolecular assemblies were
studied using AFM and SEM techniques. Additional methods (IR, UV-Vis
spectroscopy and x-ray diffraction) were applied to characterize the observed
nanotubes. The difference in the surface tension at opposite crystallite
surfaces is suggested as a possible mechanism for the nanotube nucleation.
