| 摘要 |
An organic electroluminescent element which has a long lifetime and excellent manufacturability includes a charge-transporting polymer material having high mobility and solubility in solvents, and further includes a pair of electrodes and an organic compound layer sandwiched between the pair of electrodes, at least one of the electrodes being transparent, the organic compound layer being formed of one or more layers, and at least one of the one or more layers containing at least one charge-transporting polyester represented by Formula (I-1) or (I-2). In Formulae (I-1) and (I-2), A1 represents at least one structure selected from the structures represented by Formulae (II-1) and (II-2), Y1 represents a divalent alcohol residue, Z1 represents a divalent carboxylic acid residue, each B independently represents the terminal group, m represents an integer of 1 to 5, and p represents an integer of 5 to 5000. In Formulae (II-1) and (II-2), Ar represents an aryl group, i and j each represent 0 or 1, T represents a divalent hydrocarbon group, and X represents a group represented by Formula (III). In Formula (III), R represents a hydrogen atom or a monovalent hydrocarbon group.
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