We report measurements of time-of-flight charge carrier mobility and thermal optical polarized microscopy on a new class of hexagonal columnar $\left({\Phi }_h\right)$ liquid crystals (LC) self-organized from supramolecular cylinders self-assembled from acene functionalized dendrons. We discuss the temperature and electric field-independent high hole mobility of $1–3.5\times {10}^{-3}{\mathrm{cm}}^2/\mathrm{V}\mathrm{}\mathrm{s}$ of fluorinated tapered first generation dendrons that contain pyrene and naphthalene groups in their core and self-assemble into supramolecular nanocylinders. The anomalous temperature behavior of the mobility is consistent with polaron transport mechanisms. Studies of time-of-flight transients, which reveal evidence for dynamic defects with lifetimes in the range of ${10}^{-6}\mathrm{s},$ are presented as aspects of charge generation and recombination kinetics.

• Received 31 July 2002

DOI:https://doi.org/10.1103/PhysRevB.67.035204