Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsChuanjun XIA, Bin MA, David Zenan LI, Bert ALLEYNE, Alan DEANGELIS, James FIORDELISO, Vadim ADAMOVICH
Life of this patent
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Abstract
Compounds are provided that comprise a ligand having a 5-substituted 2-phenylquinoline. In particular, the 2-phenylquinoline may be substituted with a cycloalkyl containing group at the 5-position. These compounds may be used in organic light emitting devices, in particular as red emitters in the emissive layer of such devices, to provide devices having improved properties.
Claims20
A compound comprising a ligand L having the formula:
- wherein A is a 5-membered or 6-membered carbocyclic or heterocyclic ring;
- wherein RA can represent mono, di, tri, or tetra substitutions;
- wherein each of RA is independently a hydrogen or a substituent selected from the group consisting of deuterium, alkyl, silyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl and heteroaryl;
- wherein RB is alkyl having at least 2 carbon atoms;
- and
- wherein the ligand L is coordinated to a metal M having an atomic number greater than 40.
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, comprising a compound comprising a ligand L having the formula:
- wherein A is a 5-membered or 6-membered carbocyclic or heterocyclic ring;
- wherein RA can represent mono, di, tri, or tetra substitutions;
- wherein each of RA is independently a hydrogen or a substituent selected from the group consisting of deuterium, alkyl, silyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl and heteroaryl;
- wherein RB is alkyl having at least 2 carbon atoms;
- and
- wherein the ligand L is coordinated to a metal M having an atomic number greater than 40.
A consumer product comprising an organic light emitting device, comprising:
- an anode;
- a cathode;
- and
- an organic layer, disposed between the anode and the cathode, comprising a compound comprising a ligand L having the formula:
- wherein A is a 5-membered or 6-membered carbocyclic or heterocyclic ring;
- wherein RA can represent mono, di, tri, or tetra substitutions;
- wherein each of RA is independently a hydrogen or a substituent selected from the group consisting of deuterium, alkyl, silyl, alkoxy, amino, alkenyl, alkynyl, arylkyl, aryl and heteroaryl;
- wherein RB is alkyl having at least 2 carbon atoms;
- and
- wherein the ligand L is coordinated to a metal M having an atomic number greater than 40.
Dependencies are inferred from the claim text.