BDT-TTP donors fused with aromatic rings and their cation radical salts

Several BDT-TTP derivatives fused with benzene (1a-e) and 1,2,5-thiadiazole (2c, f) rings have been synthesized. Their cation radical salts and TCNQ complexes show high conductivity (σrt = 10−1−103S cm−1). Among them, ClO4 salt of 1d is metallic down to low temperature.