Synthesis and application of dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′] dithiophene in conjugated polymer

A feasible synthetic route to alkoxy-substituted DTBDT was designed and the first DTBDT-based polymer was prepared and applied in organic solar cells. The preliminary results indicate that the DTBDT unit can be used as a potential building block in organic semiconductor materials.