Organic element for electroluminescent devices
AssigneeEastman Kodak Company
InventorsJoseph C. Deaton, Margaret J. Helber, David J. Giesen
Life of this patent
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Abstract
An electroluminescent device comprises a light-emitting layer containing a light emitting phosphorescent material that contains an organometallic complex comprising iridium fully complexed with indole ligand groups or comprising Ir, Rh, Os, Ru, Pt, and Pd and an isoindole compound. The invention further comprises compositions of certain such complexes as well as a display or area lighting devices and a process for emitting light. The organometallic materials function as useful phosphorescent light emitting materials in electroluminescent devices.
Claims28
An electroluminescent device comprising a light-emitting layer containing a light emitting phosphorescent material that contains an organometallic complex comprising a metal selected from the group consisting of Ir, Rh, Ru, Os, Pt, and Pd and an indole compound wherein the metal is fully complexed by indole ligands.
An electroluminescent device comprising a light-emitting layer containing a light emitting phosphorescent material that contains an organometallic complex comprising a metal selected from the group consisting of Ir, Rh, Ru, Os, Pt, and Pd and an indole ligand wherein the indole contains two substituents in the 3-position each selected from aryl and alkyl components, each of 2–12 carbon atoms wherein the complex is represented by formula (3):
- wherein:
- M is a coordinated metal selected from the group consisting of Ir, Rh, Os, Pt, and Pd;
- m is 1, 2 or 3 when M is Ir, Rh or Os and m is 1 or 2 when M is Pt or Pd;
- L represents an independently selected ligand group;
- w is 0–4 as necessary in order to satisfy a 6 coordination sites when M is Ir, Rh, or Os, and w is 0–2 as necessary in order to satisfy 4 coordination sites when M is Pt or Pd;
- R1 and R2 represent independently selected substituent groups, provided that R1 and R2 may form a ring group;
- Ar represents a substituted or unsubstituted aromatic group;
- and
- R5 and R6 independently represent aryl groups or alkyl groups, each of 2–12 carbon atoms.
An electroluminescent device comprising a light-emitting layer containing a light emitting phosphorescent material that contains an organometallic complex comprising a metal selected from the group consisting of Ir, Rh, Os, Ru, Pt, and Pd and an isoindole ligand.
An organometallic complex comprising a metal selected from the group consisting of Ir, Rh, Ru, Pt, and Pd and an indole compound wherein the metal is fully complexed with a plurality of indole ligands, wherein the complex is represented by Formula (2)
- wherein:
- M is a coordinated metal selected from the group consisting of Ir, Rh, Pt, and Pd;
- m is 3 when M is Ir or Rh and m is 2 when M is Pt or Pd;
- R1 and R2 represent independently selected substituent groups, provided that R1 and R2 may form a ring group;
- R3 and R4 represent independently selected substituent groups;
- and
- Ar represents a substituted or unsubstituted aromatic group.
An organometallic complex comprising a metal selected from the group consisting of Ir, Rh, Ru, Pt, and Pd and an indole compound wherein the indole contains two substituents in the 3-position selected from aryl and alkyl components, each of 2–12 carbon atoms.
An organometallic complex comprising a metal selected from the group consisting of Ir, Rh, Ru, Pt, and Pd and an isoindole ligand, wherein the complex is represented by Formula (4)
- wherein:
- M is a coordinated metal selected from the group consisting of Ir, Rh, Os, Pt, and Pd;
- m is 1, 2 or 3 when M is Ir, Os or Rh and m is 1 or 2 when M is Pt or Pd;
- L represents an independently selected ligand group;
- w is 0–4 as necessary in order to satisfy a 6 coordination sites when M is Ir, or Rh, and w is 0–2 as necessary in order to satisfy 4 coordination sites when M is Pt or Pd;
- R1 and R2 represent independently selected substituent groups, provided that R1 and R2 may form a ring group;
- R3 and R4 represent independently selected substituent groups;
- and
- Ar represents a substituted or unsubstituted aromatic group.
Dependencies are inferred from the claim text.