New polymers based on thieno[3,2-b]pyrrole derivatives and their electrochemical properties

Methylene-separated bis(thieno[3,2-b]pyrroles) and thieno[3,2-b]pyrrolopyrroles synthesized for the first time react with NBS and Br2 to form polymeric materials insoluble in organic solvents. Several synthesized polymers have been investigated as cathode materials in potassium-ion batteries and demonstrated promising electrochemical performances.