Patent ID: 7270893

Claim:
An organic electroluminescent element comprising a component layer including a light emission layer, wherein the light emission layer contains a phosphorescent compound, and the component layer contains a compound represented by the following formula 1, wherein A represents a substituted aromatic ring residue having, as a substituent, a cycloalkyl group, an alkenyl group, an alkinyl group, an aryl group, a heterocyclic group, a halogen atom, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkylthio group, a cycloalkylthio group, an arylthio group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfamoyl group, a ureido group, an acyl group, an aclyoxy group, and amido group, a carbamoyl group, a sulfinyl group, an alkylsulfonyl group, anarylsulfonyl group, an amino group, a nitro group, a cyano group, or a hydroxyl group; n is a natural number of from 3 to 5; and Z represents a monovalent organic group represented by the following formula 2, provided that formula 1 does not have an n-fold axis of symmetry, —L—Cz, Formula 2 wherein L represents a chemical bond or a divalent linkage group; and Cz represents a substituted or unsubstituted carbazole residue, and wherein in formula 1, at least one Z has a chemical structure different from that of another Z.