Synthesis and properties of conjugated polymer materials based carbazole

Astract:4,7-dibromo-n-octylcarbazole(M1)and 1,5-bis(tri-n-butyltin)-4,8-di(n-dodecylalkoxy)benzo[1,2-b∶4,5-b']dithiophene(M2)were synthesized from carbazole and 3-thenoic acid.The conjugated polymer(P1)was synthesized via Suzuki coupling reaction by M1and M2.And the polymer P1was used to characterize the structure and properties by a series of tests.The results have showed that the optical band gap of P1was 1.56eV,the electrochemical band gap of P1was 1.57eV,and 5% weight loss temperature was 314℃.The polymer P1showed the good optical properties,thermal stability and electrochemical oxidation of reduction performance.