Liquid crystalline organic semiconductor material, and semiconductor element or information recording medium using the same

摘要

An liquid crystalline organic semiconductor material practical as an organic semiconductor is provided. The material is a liquid crystal composition having a smectic liquid crystal phase. The liquid crystalline organic semiconductor material has a distyrylbenzene structure of formula (1). When heated to a temperature range for the smectic liquid crystal phase followed by being cooled, the material takes on a solid state as a result of phase transition from the smectic phase.; Wherein R¹ and R², which may be the same or different, each represent an alkyl group, an alkoxy group or a group of general formula (2):; Wherein R³ represents a hydrogen atom or a methyl group; and B represents —(CH₂)_m—, —(CH₂)_m—O—, —CO—O—(CH₂)_m, —CO—O—(CH₂)_m—O—, —C₆H₄—CH₂—O— or —CO—.