Ambipolar host in organic light emitting diode

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Reexamination Certificate

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C428S917000, C313S504000, C313S506000, C546S256000

Reexamination Certificate

active

08062772

ABSTRACT:
Some embodiments provide a compound represented by Formula 1:wherein R1, R2, R3, R6, R7, and R8are independently selected from the group consisting of H, optionally substituted C1-12alkyl, optionally substituted phenyl, optionally substituted carbazolyl, optionally substituted diphenylamine and optionally substituted diphenylaminophenyl; provided that: at least one of R1, R2, and R3is selected from optionally substituted carbazolyl, optionally substituted diphenylamine and optionally substituted diphenylaminophenyl and at least one of R6, R7, and R8is selected from optionally substituted carbazolyl, optionally substituted diphenylamine and optionally substituted diphenylaminophenyl; and R4and R5are independently selected from the group consisting of H, optionally substituted C1-12alkyl, optionally substituted phenyl, optionally substituted diphenylamine and optionally substituted diphenylaminophenyl. Other embodiments provide an organic light-emitting diode device comprising a compound of Formula I.

REFERENCES:
patent: 2002/0024293 (2002-02-01), Igarashi et al.
patent: 2002/0034656 (2002-03-01), Thompson et al.
patent: 2003/0072964 (2003-04-01), Kwong et al.
patent: 2003/0124381 (2003-07-01), Thompson et al.
patent: 2004/0024293 (2004-02-01), Lawrence
patent: 2005/0127823 (2005-06-01), Iwakuma et al.
patent: 2005/0282036 (2005-12-01), D'Andrade et al.
patent: 2006/0222886 (2006-10-01), Kwong et al.
patent: 2007/0015006 (2007-01-01), Lee et al.
patent: 2007/0075631 (2007-04-01), Tung et al.
patent: 2008/0166591 (2008-07-01), Yamada
patent: 1857521 (2007-11-01), None
patent: 1857521 (2007-11-01), None
patent: 1858094 (2007-11-01), None
patent: 2004-273190 (2004-09-01), None
patent: 2007-291092 (2007-11-01), None
patent: 2008-115131 (2008-05-01), None
patent: 2008-120696 (2008-05-01), None
patent: WO03078541 (2003-09-01), None
patent: WO2004074399 (2004-09-01), None
patent: WO2006080229 (2006-08-01), None
patent: WO2008027132 (2008-03-01), None
patent: WO 2010/090925 (2010-08-01), None
Machine-generated translation for JP 2004-273190, which was published Sep. 2004.
D'Andrade, et al., White Organic Light-Emitting Devices for Solid-State Lighting,Adv. Mater. 16, 1585, 2004.
D'Andrade, et al., White Light Emission Using Triplet Excimers in Electrophosphorescent Organic Light-Emitting Devices,Adv. Mater. 14, 1032, 2002.
D'Andrade, et al., Efficient Organic Electrophosphorescent White-Light-Emitting Device with a Triple Doped Emissive Layer,Adv. Mater. 16, 624, 2004.
Adachi, et al., Nearly 100% Internal Phosphorescence Efficiency in an Organic Light Emitting Device,J. Appl. Phys. 90, 5048, 2001.
Wu, et al., Highly Efficient White-Electrophosphorescent Devices Based on Polyfluorene Copolymers Containing Charge-Transporting Pendent Units,J. Mater. Chem. 17, 167, 2007.
Cheng, et al., White Organic Light-Emitting Devices Using a Phosphorescent Sensitizer,Appl. Phys. Lett. 82, 4224, 2003.
Seo, et al., Highly Efficient White Organic Light-Emitting Diodes using Two Emitting Materials for Three Primary Colors (red, green, and blue),Appl. Phys. Lett. 90, 203507, 2007.
Kido, et al., Pyridine-Containing Bipolar Host Materials for Hightly Efficient Blue Phosphorescent OLED's,Chem. Mater. 2008, 20(5), 1691-1693.
Baldo, et al., High-Efficiency Fluorescent Organic Light-Emitting Devices Using a Phosphorescent Sensitizer,Nature, 403, 750, 2000.
Guan, et al., The Host Materials Containing Carbazole and Oxadiazole Fragment for Red Triplet Emitter in Organic Light-Emitting Diodes,Org. Electronics, 7, 330-336, 2006.
Chen, et al., White Organic Light-Emitting Devices with a Bipolar Transport Layer Between Blue Fluorescent and Orange Phosphorescent Emitting Layers,Appl. Phys. Lett. 91, 023505, 2007.
Cai, et al., Electron and Hole Transport in a Wide Bandgap Organic Phosphine Oxide for Blue Electrophosphorescence,Appl. Phys. Lett. 92, 083308, 2008.
Sun, et al., Management of Singlet and Triplet Excitons for Efficient White Organic Light-Emitting Devices,Nature,440, 908, 2006.
Machine translation for JP2004-273190, Sep. 2004 in 44 pages.
Su Shi-Jian, et al., “Pyridine-Containing Bipolar Host Materials for Highly Efficient Blue Phosphorescent OLEDs” Chemistry of Materials, American Chemical Society, Washington, US, vol. 20, Jan. 1, 2008, pp. 1691-1693, XP002535894, ISSN: 0897-4756.
Office Action in U.S. Appl. No. 12/694,984, dated Mar. 17, 2011.
Office Action in U.S. Appl. No. 12/694,920, dated Feb. 18, 2011.
Office Action in U.S. Appl. No. 12/695,000, dated Mar. 25, 2011.
Office Action in U.S. Appl. No. 12/694,994, dated Mar. 17, 2011.
Office Action in U.S. Appl. No. 12/694,939, dated Mar. 31, 2011.

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