One-Dimensional Growth of Phenylene Oligomer Single Crystals on Friction-Transferred Poly( p-phenylene) Film

One-dimensionally oriented thin crystals of a phenylene oligomer, p-sexiphenylene (6P), are grown on the poly(p-phenylene) (PPP) film prepared by the friction-transfer method. The GP molecules tend to grow epitaxially on the (001) planes of alkali halides and the molecular axis is parallel to the [110] directions of alkali halides. The needle crystals orient along two directions. On the other hand. 6P stands on quartz plates with random orientations. The slender crystals of GP formed on the friction-transferred PPP on alkali halides and quartz plates confirm that the uniaxial orientation has anisotropic optical properties.