The invention relates to new conjugated mono-, oligo- and polydithienopyridines, their use as semiconductors or charge transport materials in optical, electrooptical or electronic devices including field effect transistors, electroluminescent, photovoltaics, sensors and electrophotographic recording devices, and to a field effect transistor as a component of integrated circuitry, as a thin fim transistor in flat panel display applications or for RFID tags, or a semiconducting component in organic light-emitting diode applications, comprising the new mono-, oligo and polydithienopyridines.