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US 9,853,227 B2Granted
Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsBin Ma, Alan DeAngelis, Chuanjun Xia, 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 bulky alkyl 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.
Claims17
A compound having a structure of Formula II:
- wherein m is 1 or 2;
- wherein L′ is
- wherein A is a 5-membered or 6-membered carbocyclic or heterocyclic ring;
- wherein RA may represent mono, di, tri, or tetra substitutions;
- wherein each of RA, R1, R2, and R3 is independently selected from the group consisting of hydrogen, deuterium, alkyl, silyl, alkoxy, amino, alkenyl, alkynyl, aralkyl, aryl and heteroaryl;
- and
- wherein RB is selected from the group consisting of amino, alkenyl, alkynyl, and aralkyl.
4 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, comprising a compound having a structure of Formula II:
- wherein m is 1 or 2;
- wherein L′ is
- wherein A is a 5-membered or 6-membered carbocyclic or heterocyclic ring;
- wherein RA may represent mono, di, tri, or tetra substitutions;
- wherein each of RA, R1, R2, and R3 is independently selected from the group consisting of hydrogen, deuterium, alkyl, silyl, alkoxy, amino, alkenyl, alkynyl, aralkyl, aryl and heteroaryl;
- and
- wherein RB is selected from the group consisting of amino, alkenyl, alkynyl, and aralkyl.
8 more elements
Dependencies are inferred from the claim text.