The electronic device comprises an organic semiconductor material in a monodomain structure on a substrate. Said semiconductor material is preferably part of a transistor, wherein the monodomain extends on the channel, i.e. from a source to a drain electrode. The material comprises a mesogenic unit with spacer groups and end groups. The end groups are preferably reactive, i.e. dienes, acrylates, oxetanes or the like. The mesogenic unit contains a central oligothiophenyl-group, rigid spacer groups, particularly acetylenes, and additional groups, for instance thiophenyl or phenyl.