Organic electroluminescent materials and devices

摘要

Disclosed is a compound having substructure F:;
wherein R′1 is a straight or branched chain of two or more non-fused aryl or non-fused heteroaryl groups substituted with Ra, wherein Ra is a non-fused aryl or non-fused heteroaryl, a branched or straight chain of non-fused aryl or a non-fused heteroaryl, or an alkyl substituted non-fused aryl or an alkyl substituted non-fused heteroaryl group. The compounds may be useful in phosphorescent organic light emitting devices.

主权项

1. A compound comprising a triphenylene core of Formula I: wherein each of R1, R2, and R3 is independently a hydrogen, a non-fused aryl group or a non-fused heteroaryl six-membered ring having one or more meta-substituents; wherein each meta-substituent is a non-fused aryl or heteroaryl six-membered ring optionally substituted with further substituents selected from the group consisting of non-fused aryl groups, non-fused heteroaryl groups, and alkyl groups; and wherein at least one of R1, R2, and R3 is a non-fused aryl or heteroaryl six-membered ring having at least one meta-substituent that is a non-fused aryl or heteroaryl group further substituted with one or more non-fused aryl or heteroaryl groups, wherein the at least one meta-substituent is substituted with a chain of at least two non-fused aryl or heteroaryl groups.