Synthesis and electrochemical polymerization of diketopyrrolopyrrole based donor–acceptor–donor monomers containing 3,6- and 2,7-linked carbazoles

Three new donor–acceptor–donor type monomers bearing 2,7- or 3,6-linked carbazoles as the donor unit and diketopyrrolopyrrole as the acceptor unit were synthesized via a Suzuki cross coupling reaction.