Patent ID: 6299796
Filing Date: 2001-10-09
Classification: C09K,H01L

Abstract:
An electroluminescent element comprising at least one compound containing at least one unit represented by formula (1): ##STR11##wherein X.sup.1 represents an oxygen atom, an sulfur atom or >NR.sup.6 ; R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6, which are the same or different, each represents a hydrogen atom or a substituent, provided that at least one of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 represents an aromatic group; R.sup.a and R.sup.b, which are the same or different, each represents a hydrogen atom or a substituent; Ar.sup.1 represents an aromatic linking group; and Ar.sup.2 and Ar.sup.3 each represents an aromatic group.