Diacenaphthylene-fused benzo[1,2-b:4,5-b‘]dithiophenes:\ud polycyclic heteroacenes containing full-carbon five-membered aromatic rings

We herein report on an efficient synthesis of diacenaphthylenefused benzo[1,2-b:4,5-b’]dithiphenes and demonstrate that their packing structure in the solid state depends on the substituent groups. These compounds form dimers with their radical cations in high solution concentration and display good field-effect mobility.