| abstract |
The present invention provides compounds useful as host materials in OLEDs. This compound is a compound having at least one functional group selected from the group consisting of triphenylene, carbazole, indolocarbazole, dibenzothiophene, dibenzofuran, dibenzoselenophene, azatriphenylene, azacarbazole, azaindolocarbazole, azadibenzothiophene, Azadibenzofuran and azadibenzoselenophene, wherein the compound is selected from the group consisting of alkyl, cycloalkyl, spiroalkyl, partially or fully deuterated versions thereof, some or all of which are fluorinated And one or more R's selected from the group consisting of combinations thereof. |