| abstract |
A compound of the following Formula I n n n n n n n n n n is provided. In Formula I, A is C, B, Si, Ge, or Sn; each of X 1 to X 22 is independently C or N; Z 1 and Z 2 are each independently B or N; when A is B, one of X 4 , X 5 , X 12 , and X 22 is N, and the remainder are C; when A is C, at least one of Z 1 and Z 2 is B; each of Y 1 , Y 2 , Y 3 , and Y 4 is independently O, S, Se, NR, CRR′, SiRR′, GeRR′, and SnRR′; one of both of Y 1 and Y 2 are present; one of both of Y 3 and Y 4 are present; each R, R′, R A , R B , R C , R D , R E , and R F is independently hydrogen or a variety of substituents; and any two adjacent R, R′, R A , R B , R C , R D , R E , and R F can be joined or fused to form a ring. Devices, consumer products, and formulations including the compound are also disclosed. |