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US 2001/0033944 A1Published application
Light-emitting material for organo-electroluminescence device and for organic electroluminescence device which the material is applied
AssigneeToyo Ink Manufacturing Co., Ltd.
InventorsTOSHIKAZU ONIKUBO, MICHIKO TAMANO, SATOSHI OKUTSU, TOSHIO ENOKIDA
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Abstract
A light-emitting material which serves to emit light having a high brightness and is almost free of deterioration in light emission, and an organic EL device for which the light-emitting material is adapted, the material having the formula (1) disclosed in claim 1, 2 or 3. 1
Claims6
A light-emitting material of the formula [1] for an organic EL device,
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- wherein A is a substituted or non-substituted divalent aromatic group, a substituted or non-substituted divalent fused aromatic group (excluding a group of the formula [2] shown below), a substituted or non-substituted hetero-aromatic divalent group, a substituted or non-substituted divalent fused hetero-aromatic group or a divalent group (excluding a group of the formula [3] shown below) 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, 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 —O—, —S—, >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 carbon atoms, 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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- wherein E is a hydrogen atom or any adjacent two E's may bond to each other to form a fresh six-membered ring,
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2 more elements
A light-emitting material of the formula [4] for an organic EL device,
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- wherein A, X1 to X4 and R1 to R20 are as defined above.
A light-emitting material of the formula [5] for an organic EL device,
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- wherein A and R1 to R20 are as defined above, and each of Y1 to Y8 is a substituted or non-substituted alkyl group having 1 to 20 carbon atoms or a substituted or non-substituted aromatic group having 6 to 16 carbon atoms (provided that groups of Y1 and Y2, Y3 and Y4, Y5 and Y6, or Y7 and Y8 may form a substituted or non-substituted alicyclic group having 5 to 7 carbon atoms.
Dependencies are inferred from the claim text.