Hence, aiming to achieve solubility and processability of conjugated polymers without the attachment of aliphatic side chains (while also retaining or improving the redox properties), we decided to integrate macrocycles into conjugated polymer backbones. Due to the high solubility and intriguing material properties of PCT and its derivatives, PCT units were chosen as the macrocyclic units and integrated into conjugated polymers by copolymerization with (bi)thiophene derivatives (Scheme 1, bottom).