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US 7,241,513 B2Granted
Fluorene compound and organic luminescent device using the same
AssigneeCanon Kabushiki Kaisha
InventorsKoichi Suzuki, Mizuho Hiraoka, Akihiro Senoo, Naoki Yamada, Chika Negishi, Akihito Saitoh, Daisaku Tanaka, Ryoji Yashiro
Life of this patent
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Abstract
A fluorene compound represented by the following general formula [I]: is used to provide an organic luminescent device. Such a device has an optical output exhibiting a high luminance with an extremely high efficiency, and has an extremely high durability.
Claims11
A fluorene compound represented by the following general formula [I]:
- wherein R1 and R2 represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted amino group, a cyano group, or a halogen atom, in which R1 themselves or R2 themselves which are bonded to different fluorene groups may be identical to or different from each other and R1 and R2 which are bonded to the same fluorene group may be identical to or different from each other;
- wherein R3 and R4 represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, in which R3 themselves or R4 themselves which are bonded to different fluorene groups may be identical to or different from each other and R3 and R4 which are bonded to the same fluorene group may be identical to or different from each other;
- wherein Ar1 and Ar2 represent a substituted or unsubstituted fused polycyclic aromatic group represented by one of the following general formulae [II], [III] and [V] through [IX]
- wherein R5, R6 and R8 to R12 each represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted amino group, a cyano group, or a halogen atom;
- in which Ar1 and Ar2 may be identical to or different from each other;
- and
- wherein n represents an integer of 1 to 10.
4 more elements
Dependencies are inferred from the claim text.