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US 9,543,532 B2Granted
Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorRaymond C. Kwong
Life of this patent
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Abstract
Novel organic compounds comprising a substituted anthracene or acridine ligand are provided. In particular, the compound includes an anthracene ligand substituted at the 9 and 10 positions. The compound may be used in organic light emitting devices to provide devices having improved efficiency and lifetime. In particular, these compounds may be especially beneficial for use in blue-emitting OLEDs.
Claims41
A compound comprising a ligand L having the formula:
- wherein X is C;
- wherein R is selected from alkyl, alkenyl, alkynyl, amino, alkoxy, silyl, phosphino, mercaptyl, aryl or heteroaryl;
- wherein R2 and R3 may represent mono, di, tri, or tetra substitutions;
- wherein R2 and R3 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, aryl and heteroaryl;
- wherein the ligand L is coordinated to a metal M through coordinating atom X;
- wherein M is a transition metal;
- and
- wherein the ligand L is optionally linked to a second ligand, which is also coordinated to the metal M.
5 more elements
A first device comprising an organic light emitting device, comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, further comprising compound comprising a ligand L having the formula:
- wherein X is C;
- wherein R is selected from alkyl, alkenyl, alkynyl, amino, alkoxy, silyl, phosphino, mercaptyl, aryl or heteroaryl;
- wherein R2 and R3 may represent mono, di, tri, or tetra substitutions;
- wherein R2 and R3 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, aryl and heteroaryl;
- wherein the ligand L is coordinated to a metal M through coordinating atom X;
- wherein M is a transition metal;
- and
- wherein the ligand L is optionally linked to a second ligand, which is also coordinated to the metal M.
9 more elements
Dependencies are inferred from the claim text.