Fused heterocyclic compound and organic light emitting device

• US 8,072,137 B2
• Filed: 07/31/2007
• Issued: 12/06/2011
• Est. Priority Date: 08/04/2006
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Ohrui, Hiroki, Okada, Shinjiro, Senoo, Akihiro, Yamada, Naoki, Muratsubaki, Masanori
• Primary Examiner(s): Ortiz, Angela
• Assistant Examiner(s): YANG, JAY
• Application Number:
  US12/301,330
• Publication Number:
  US 20090121625A1
• Time in Patent Office: 1,589 Days
• Field of Search: 428/690, 428/917, 428/411.1, 428/336, 313502-509, 257/40, 257/88, 257/104, 257/E51, 532/1, 540/1, 546/24, 546/42
• US Class Current: 313/504
• CPC Class Codes: C07D 221/18 Ring systems of four or more rings
• CPC Class Codes: C07D 239/70 condensed with carbocyclic rings or ring systems
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1011 Condensed systems
• CPC Class Codes: C09K 2211/1029 containing one nitrogen atom as the heteroatom
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/622 containing four rings, e.g. pyrene
• CPC Class Codes: H10K 85/633 comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole

Abstract

To provide a material for an organic light emitting device showing a light emission hue with an extremely good purity and outputting light having high luminance and a long lifetime with high efficiency, the present invention relates to a fused heterocyclic compound having at least one partial structure represented by the following general formula [1].

Claims

1. A fused heterocyclic compound represented by the following general formula [1]:

3. An organic light emitting device comprising:

a pair of electrodes constituted of an anode and a cathode at least one of which is formed of a transparent or semitransparent electrode material; and

a layer containing an organic compound, the layer being interposed between the pair of electrodes,

wherein the layer containing an organic compound contains the fused heterocyclic compound according to claim 1.

4. An organic light emitting device according to claim 3, wherein the layer containing the fused heterocyclic compound comprises at least two kinds of compounds of a host and a guest.

5. An organic light emitting device according to claim 4, wherein the guest comprises the fused heterocyclic compound, and the host comprises a compound having an energy gap larger than an energy gap of the fused heterocyclic compound.

6. An organic light emitting device according to claim 5, wherein the guest has a reduction potential higher than that of the host by 0.3 V or more.

7. An organic light emitting device according to claim 3, wherein the layer containing the fused heterocyclic compound comprises at least one layer having a light emitting region.

8. An organic light emitting device according to claim 7, wherein the at least one layer having the light emitting region comprises a light emitting layer.

2. A fused heterocyclic compound represented by the following general formula [5]:

9. An organic light emitting device comprising:

a pair of electrodes constituted of an anode and a cathode at least one of which is formed of a transparent or semitransparent electrode material; and

a layer containing an organic compound, the layer being interposed between the pair of electrodes,

wherein the layer containing an organic compound contains the fused heterocyclic compound according to claim 2.

10. An organic light emitting device according to claim 9, wherein the layer containing the fused heterocyclic compound comprises at least two kinds of compounds of a host and a guest.

11. An organic light emitting device according to claim 10, wherein the guest comprises the fused heterocyclic compound, and the host comprises a compound having an energy gap larger than an energy gap of the fused heterocyclic compound.

12. An organic light emitting device according to claim 11, wherein the guest has a reduction potential higher than that of the host by 0.3 V or more.

13. An organic light emitting device according to claim 9, wherein the layer containing the fused heterocyclic compound comprises at least one layer having a light emitting region.

14. An organic light emitting device according to claim 13, wherein the at least one layer having the light emitting region comprises a light emitting layer.