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Light-emitting material for organo-electroluminescence device and for organic electroluminescence device which the material is applied

  • US 6,280,859 B1
  • Filed: 03/17/1998
  • Issued: 08/28/2001
  • Est. Priority Date: 03/17/1997
  • Status: Expired due to Fees
First Claim
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1. A light-emitting material of the formula [1] 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 Ar1 to Ar4 is independently a substituted or non-substituted aromatic group or a substituted or non-substituted fused aromatic group, each of X1 to X4 is independently >

  • C═

    O, >

    SO2, —

    (CxH2x)—

    O—

    (CyH2y)—

    (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 R1 to R20 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 R1 to R5, R6 to R10, R11 to R15, or R16 to R20 may bond to each other to form a fresh ring).

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