Synthesis of oligo(p-phenylene–vinylene–thienylene)s as potential red light-emitting materials

Several potential red light-emitting oligomers containing alkoxylated phenylene–vinylene–thienylene backbones with and without cyano groups at the olefin moieties have been designed and synthesized. The influences of the skeleton as well as the position of the cyano groups in the vinylene moiety to the absorption and emission spectra of these new oligomers are also discussed.