Patent ID: 6280859
Filing Date: 2001-08-28
Classification: C07C,C07D,C09B,C09K,H01L,H05B,Y02E,Y10S

Abstract:
A light-emitting material of the formula [1] ##STR288##wherein A is a substituted or non-substituted divalent aromatic group, a substituted or non-substituted hetero-aromatic divalent group, or a divalent group in which 2 to 10 identical or different groups out of the above groups are bonded to each other directly or through at least one of an oxygen atom, a nitrogen atom, a sulfur atom, a linear structural unit having 1 to 20 carbon atoms and optionally containing a hetero-atom, or a non-aromatic ring structural unit, with the proviso that A does not encompass a fused aromatic group or an amino group, each of Ar.sup.1 to Ar.sup.4 is independently a substituted or non-substituted aromatic group or a substituted or non-substituted fused aromatic group, each of X.sup.1 to X.sup.4 is independently >C.dbd.O, >SO.sub.2, --(C.sub.x H.sub.2x)--O--(C.sub.y H.sub.2y)-- (in which each of x and y is an integer of 0 to 20, while x+y=0 in no case), a substituted or non-substituted alkylidene group having 2 to 20 carbons, a substituted or non-substituted alkylene group having 2 to 20 carbon atoms or a substituted or non-substituted divalent alicyclic residue, and each of R.sup.1 to R.sup.20 is independently a hydrogen atom, a halogen atom, a substituted or non-substituted alkyl group, a substituted or non-substituted alkoxy group, a substituted or non-substituted aromatic group, a substituted or non-substituted hetero-aromatic group or a substituted or non-substituted amino group (provided that adjacent groups of R.sup.1 to R.sup.5, R.sup.6 to R.sup.10, R.sup.11 to R.sup.15, or R.sup.16 to R.sup.20 may bond to each other to form a fresh ring).