Synthesis, structural characterization and electronic properties of 3,3″″′-bis(butylsulfanyl)-2,2′∶5′,2″∶5″,2‴∶5‴,2″″∶5″″,2‴″-sexithiophene

Abstract

Synthesis and NMR, UV–VIS, electrochemical, mobility and X-ray characterization of 3,3″″′-bis(butylsulfanyl)-2,2′∶5′,2″∶5″,2‴∶5‴,2″″∶5″″,2″″′-sexithiophene are reported. This compound combines the promising properties already observed for 3,3‴,3″″′-tris(butylsulfanyl)-2,2′∶5′,2″∶5∶,2‴∶5‴,2″″∶5″″,2″″′-sexithiophene with a physical state more suitable for its use in field-effect transistors. In particular, the stability of the oxidized forms, the close packing in the solid state together with the mobility and on/off ratio observed make this sexithiophene of potential interest for organic semiconductors.