CONJUGATED COMPOUNDS CONTAINING HYDROINDOLOACRIDINE STRUCTURAL ELEMENTS, AND THEIR USE

• US 20090136779A1
• Filed: 11/26/2007
• Published: 05/28/2009
• Est. Priority Date: 11/26/2007
• Status: Active Grant

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: Chien-Hong Cheng
• Inventors: Cheng, Chien-Hong, Lin, Jin-Ju
• Granted Patent: US 7,862,908 B2
• Time in Patent Office: Days
• US Class Current: 428/690
• CPC Class Codes: C07D 471/06 Peri-condensed systems
• CPC Class Codes: C09B 57/00 Other synthetic dyes of known constitution
• CPC Class Codes: C09B 57/007 Squaraine dyes
• CPC Class Codes: Y10S 428/917 Electroluminescent
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]

Abstract

The present invention discloses a conjugated compound containing a hydroindoloacridine structural element and its applications as a host material or a hole transport material in an organic electronic device. The general structure of the conjugated compound containing a hydroindoloacridine structural element is as follows:

where R¹˜R⁵ can be identical or different.

Claims

1. A conjugated compound containing a hydroindoloacridine structural element, comprising the following general structure:

2. The conjugated compound according to claim 1, wherein said aryl group comprises one functional group selected from the group consisting of the following:

phenyl, naphthyl, diphenyl, anthryl, pyrenyl, phenanthryl, fluorene, or other multi-phenyl group.

3. The conjugated compound according to claim 1, wherein said heterocyclic ring group comprises one functional group selected from the group consisting of the following:

pyrane, pyrroline, furan, benzofuran, thiophene, benzothiophene, pyridine, quinoline, isoquinoline, pyrazine, pyrimidine, pyrrole, pyrazole, imidazole, indole, thiazole, isothiazole, oxazole, isoxazole, benzothiazole, benzoxazole, 1,2,4-triazole, 1,2,3-triazole, 1,2,3,4-tetraazole, phenanthroline, or other heterocyclic aryl group.

4. The conjugated compound according to claim 1, wherein said conjugated compound containing a hydroindoloacridine structural element is utilized in an organic electroluminescence and/or phosphorescence device.

5. The conjugated compound according to claim 1, wherein said conjugated compound containing a hydroindoloacridine structural element is utilized as a host material for an organic electroluminescence and/or phosphorescence device.

6. The conjugated compound according to claim 1, wherein said conjugated compound containing a hydroindoloacridine structural element is utilized as a hole transport material for an organic electronic device.

7. An organic light emitting device, comprising:

a pair of electrodes; and

at least one organic layer provided between said electrodes;

wherein said at least one organic layer comprises one light-emitting layer and at least one of said organic layers comprises one conjugated compound containing a hydroindoloacridine structural element, having the following general structure;

8. The device according to claim 7, wherein said aryl group comprises one functional group selected from the group consisting of the following:

phenyl, naphthyl, diphenyl, anthryl, pyrenyl, phenanthryl, fluorene, or other multi-phenyl group.

9. The device according to claim 7, wherein said heterocyclic ring group comprises one functional group selected from the group consisting of the following:

pyrane, pyrroline, furan, benzofuran, thiophene, benzothiophene, pyridine, quinoline, isoquinoline, pyrazine, pyrimidine, pyrrole, pyrazole, imidazole, indole, thiazole, isothiazole, oxazole, isoxazole, benzothiazole, benzoxazole, 1,2,4-triazole, 1,2,3-triazole, 1,2,3,4-tetraazole, phenanthroline, or other heterocyclic aryl group.

10. The device according to claim 7, wherein said conjugated compound containing a hydroindoloacridine structural element is utilized in said light-emitting layer of said organic light emitting device.

11. The device according to claim 7, wherein said conjugated compound containing a hydroindoloacridine structural element is utilized as a host material in said light-emitting layer of said organic light emitting device.

12. The device according to claim 7, wherein said conjugated compound containing a hydroindoloacridine structural element is utilized as an electron transport material of said organic light emitting device.

13. The device according to claim 7, wherein said conjugated compound containing a hydroindoloacridine structural element is utilized as a hole transport material of said organic light emitting device.

14. The device according to claim 7, wherein said light-emitting layer further comprises a guest emitting material and said guest emitting material comprises a transition metal complex.

15. The device according to claim 14, wherein the transition metal of said transition metal complex is selected from the group consisting of the following:

iridium (Ir), platinum (Pt), osmium (Os), copper (Cu), rhodium (Rh), europium (Eu), and ruthenium (Ru).

16. The device according to claim 14, wherein said guest emitting material is blue phosphorescent.

17. The device according to claim 14, wherein said guest emitting material is green phosphorescent.

18. The device according to claim 14, wherein said guest emitting material is red phosphorescent.