We have recently explored the synthesis of the star-shaped ladder-type oligophenylenes based on Spiro-fluorene core,symmetrically end-capped with diphenylamino donors.
To develop conjugated polymers with low band gap,deep HOMO level,and good solubility,two new π-conjugated alternating copolymers PTATDTBT and PTATDTBTF based on triazatruxene(TAT)and benzothiadiazole