Liquid crystalline organic semiconductor material and organic semiconductor device using same
申请人:Sasada Yasuyuki
公开号:US20080058544A1
公开(公告)日:2008-03-06
The present invention provides a novel organic semiconductor material that affords efficient charge transport, under a wider range of conditions, by increasing the temperature stability and expanding the temperature range of the organic semiconductor material. In an organic semiconductor material comprising a liquid crystalline compound having substituents on the periphery of a rigid plate-like central structure, the substituents have a fluorinated phenylene group, and columns in which the molecules of the compound are accumulated in a stack are aligned hexagonally.
Four derivatives of hexakis(4-alkoxybenzoyloxy)triphenylene, for which peripheral phenylene groups are fluorinated at the inner and the outer positions were studied for their mesomorphic behaviour to reveal that the alteration of fluorinated positions in the phenyl rings leads to a drastic change of the mesomorphism involving the thermal stability.