H Thiem, P Strohriegl, S Setayesh, D de Leeuw - Synthetic metals, 2006 - Elsevier
We report the synthesis of five new 5, 5′-bis (9, 9′-dialkylfluorene-2-yl)-2, 2′-
bithiophenes 4a–e as active materials for the use in OFETs. Depending on the type of alkyl …