| abstract |
(57) [Problem] To provide a novel discotic liquid crystal material. A nitrogen atom -XYR substituents [R is one or more -CH 2 in the straight-chain or branched alkyl group (the alkyl group of carbon atoms from 1 to 20 - is -O-, -CO -, - CH = CH -, - C≡C-, represent optionally substituted epoxy group), X is -CO -, - CH 2 -, Y represents the -Ph-Ph -, - Ph -Py-, -Py- Ph-, -Np- (Ph represents a phenyl group, Py represents a pyrimidine group, and Np represents a naphthalene group, each of which has at least one halogen atom, an alkyl group having 1 to 20 carbon atoms (1 of the alkyl groups) more than five -CH 2 - is -O -, - CO -, -CH = CH-, -C≡C-, or an epoxy group). ] An azacrown derivative having the formula: |