| abstract |
A method of reacting bis(R 1 ) 5,5"'-dibromo-3",4'-difluoro-[2,2':5',2":5",2"'-quaterthiophene]- 3,3"'-dicarboxylate and bis(R 2 ) 5,5'"-dibromo-3",4'-difluoro-[2,2':5',2":5",2'"-quaterthiophene]- 3,3"'-dicarboxylate to form the polymer: Formula (I) In this polymer R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are independently selected from the group consisting of: a halogen, a substituted alkyl, an unsubstituted alkyl, a substituted aryl, an unsubstituted aryl, a substituted heteroaryl and an unsubstituted heteroaryl. |