Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsBin Ma, Alan Deangelis
Life of this patent
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Abstract
A compound useful as a host material in an OLED is provided. The compound includes at least one chemical group selected from the group consisting of triphenylene, carbazole, indolocarbazole, dibenzothiphene, dibenzofuran, dibenzoselenophene, aza-triphenylene, azacarbazole, aza-indolocarbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene; wherein the compound is substituted by at least one R selected from the group consisting of alkyl, cycloalkyl, spiroalkyl, partially or fully deuterated variants thereof, partially or fully fluorinated variants thereof, and combination thereof.
Claims20
A compound, wherein the compound has a structure selected from
- wherein R1 to R5 each independently represents mono to the possible maximum number of substitution, or no substitution;
- wherein R1 to R6 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 L is an organic linker or a direct bond;
- wherein at least one of R1, R2, R3, R4, and R5 is an R;
- wherein R is selected from the group consisting of partially or fully deuterated alkyl, partially or fully fluorinated alkyl, cycloalkyl, partially or fully deuterated cycloalkyl, partially or fully fluorinated cycloalkyl, spiroalkyl, partially or fully deuterated spiroalkyl, partially or fully fluorinated spiroalkyl, and combination thereof;
- and
- X1 is S, O, or Se.
Dependencies are inferred from the claim text.