Electropolymerization of alternating phenylene and thiophene electrochromic polymers
2,5-Diphenyl thiophene(DPT),1,4-di-2-thienylbenzene(DTP)and 1,4-di-(3-methyl-2-thienyl) benzene(DMTP)are synthesed by Kumada coupling,and electropolymerized as PDPT,PDTP and PDMTP.PDPT is electrochemical unstable,while PDTP and PDMTP have well electroactivity between 0—1.2 V.Besides,PDTP and PDMTP display cyan-orange and red-green-blue electrochromism respectively,which could be used in electrochromic devices.