| abstract |
(57) [Problem] To provide an electroluminescent element having excellent heat resistance and mechanical properties, improved stability, and a long life. SOLUTION: In an electroluminescent device including a transparent electrode layer, a metal electrode layer, and an organic intermediate layer which is in close contact between the two electrode layers, the organic intermediate layer is an organic light emitting layer, a selective hole. A transport layer and an optional electron transport layer, An electroluminescent device comprising a polyimide represented by the following general formula (I). Embedded image In the above formula, A is a residue derived from a dianhydride, B is a residue derived from a diamine compound, and n is an integer of 2 or more. |