High mobility hole transport fluorene-triarylamine copolymers

The efficiency of electroluminescent devices is strongly affected by charge carrier mobilities, in that electrons and holes must be able to be quickly transported for high quantum efficiency. Hole mobility data are reported h ere for a new family of five conjugated copolymers consisting of triarylami nes-which are known to possess high time-of-flight (TOF) hole mobilities-co mbined with fluorenes via a Suzuki coupling reaction. All five display high room-temperature TOF hole mobilities, while one, "TFB", has the highest ye t reported for a pi-conjugated polymer.