Synthesis, Structural Characterization and Electronic Properties of 3,3'''''-Bis(butylsulfanyl)-2,2':5',2'':5'',2''':5''',2'''':5'''',2'''''-sexithiophene

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)-22′ : 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. ©The Royal Society of Chemistry 1999.