A "kite" shaped styryl end-capped benzo[2,1-b:3,4-b']dithiophene with high electrical performances in organic thin film transistors

Y. Didane (1) , G.H. Mehl , A. Kumagai , N. Yoshimoto , C. Videlot-Ackermann , H. Brisset (1)

1 CINaM - Centre Interdisciplinaire de Nanoscience de Marseille

The bridging of distyryl-bithiophene leads to a kite shape of the conjugated system. This twist is not like twistacenes or twist deformation in alpha-oligothiophenes but a curvature such as in bowl shaped systems. Initially perceived to be undesirable, this new semiconductor in OTFT devices provides excellent performances in air, mu = 0.1 cm(2)/V.s, I(on)/I(off) > 10(6), S < 4 V/decade, higher by a factor of 5 to the parent unbridged coplanar analogue.

Domaines: Chimie

Y. Didane, G.H. Mehl, A. Kumagai, N. Yoshimoto, C. Videlot-Ackermann, et al.. A "kite" shaped styryl end-capped benzo[2,1-b:3,4-b']dithiophene with high electrical performances in organic thin film transistors. Journal of the American Chemical Society, 2008, 130 (52), pp.17681-17683. ⟨10.1021/ja807504k⟩. ⟨hal-00386897⟩