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US 8,795,850 B2Granted
Phosphorescent heteroleptic phenylbenzimidazole dopants and new synthetic methodology
AssigneeUniversal Display Corporation
InventorsGregg Kottas, Chuanjun Xia, Zeinab Eishenawy, Nasrin Ansari
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Abstract
Novel heteroleptic iridium complexes are provided. These iridium complexes are useful compounds in OLED devices. The ligands for these novel complexes may be obtained using a new synthetic methodology that utilizes manganese dioxide.
Claims31
A compound having a structure according to Formula I:
- wherein R1 may represent mono- or di-substitution;
- wherein R2, R3 and R4 may represent mono-, di-, tri- or tetra-substitution;
- wherein R1, R2, R3, R4 and R5 are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl sulfonyl, phosphino, and combinations thereof;
- wherein R1, R2, R3 and R4 are optionally fused;
- wherein X is selected from the group consisting of CRR′, SiRR′, C═O, N—R, B—R, O, S, SO, SO2, and Se;
- wherein R and R′ are independently selected from the group consisting of linear alkyl, branched alkyl, and aryl;
- and
- wherein n=1 or 2.
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, comprising a compound having the Formula:
- wherein R1 may represent mono- or di-substitutions;
- wherein R2, R3 and R4 may represent mono-, di-, tri- or tetra-substitution;
- wherein R1, R2, R3, R4 and R5 are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrite, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
- wherein R1, R2, R3 and R4 are optionally fused;
- wherein X is selected from the group consisting of CRR′, SiRR′, C═O, N—R, B—R, O, S, SO, SO2, and Se;
- wherein R and R′ are independently selected from the group consisting of linear alkyl, branched alkyl, and aryl;
- and
- wherein n=1 or 2.
9 more elements
Dependencies are inferred from the claim text.