Patent ID: 8664645
Filing Date: 2014-03-04
Classification: H01L

Abstract:
1. An organic electroluminescence element comprising: a pair of electrodes composed of a positive electrode and a negative electrode, one of which is transparent or semitransparent; and one or more organic compound layers that are sandwiched between the pair of electrodes, in which at least one layer of the organic compound layers contains one or more of charge-transporting polyesters represented by the following formula (I): in formula (I), A 1 represents a group selected from a structure shown by the following formula (II), Y 1 and Y 2 each independently represents a substituted or unsubstituted divalent hydrocarbon group, m1 and m2 each independently represents an integer of 1 to 5, and p represents an integer of 5 to 5000; R 1 and R 2 each independently represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group, in formula (II), Ar 1 and Ar 2 each independently represents a substituted or unsubstituted phenyl group, a substituted or unsubstituted monovalent polynuclear aromatic hydrocarbon group having an aromatic ring number of 2, a substituted or unsubstituted monovalent condensed aromatic hydrocarbon group having an aromatic ring number of 2 or 3, or a substituted or unsubstituted monovalent aromatic heterocycle group, j1 and j2 each independently represents 0 or 1, T 1 and T 2 each independently represents a divalent straight-chain hydrocarbon group having a carbon number of 1 to 6 or a divalent branched-chain hydrocarbon group having a carbon number of 2 to 10, and X represents a group selected from the following formula (III-1) and the following formula (III-2), in formula (III-1), q1 and q2 each independently represents 0 or 1.