Conjugated copolymers of 9,9-dioctylfluorene alternating with benzothiadiaz
ole and dithiophene moieties in the main chain were found to be 'hairy rod'
type thermotropic liquid crystalline polymers as well as yellow to red pho
toluminescence emitters. Thin films of both copolymers were found to align
into monodomains on standard liquid crystal alignment layers as well as on
rubbed precursor route poly(para-phenylenevinylene) (precPPV), which is tra
nsparent to red light. This observation is of importance for the use of pre
cPPV as a hole transporting alignment layer for fluorene copolymers in pola
rized electroluminescence devices.