| 摘要 |
An organic electroluminescent device with a pair of electrodes having an anode and a cathode, and one or more organic compound layers disposed therebetween. One of the anode or the cathode is transparent or semitransparent. One of the organic compound layers includes a charge-transporting polyester having a repeating structure containing at least one structure selected from the structures represented by the following formulae as a partial structure: Ar represents an unsubstituted monovalent phenyl group, an unsubstituted monovalent polynuclear aromatic hydrocarbon having 2 to 10 aromatic rings, an unsubstituted monovalent fused aromatic hydrocarbon having 2 to 10 aromatic rings, or an unsubstituted monovalent fused aromatic hydrocarbon having 2 to 10 aromatic rings, or an unsubstituted monovalent aromatic heterocyclic ring; X represents a group represented by the following formula (II); T represents a bivalent straight-chain hydrocarbon group having 1 to 6 carbon atoms; k represents O; and l represents 1: R1 and R2 each represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; and n represents an integer of 1 to 10.
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