Patent ID: 11917843
Assignee: UNIVERSAL DISPLAY CORPORATION
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A compound selected from formula I or formula II, wherein X1 to X8 are independently selected from N or C;
Y1 to Y4 are independently selected from the group consisting of O, S, Se, CRR′, and NR;
a, b, c, d, e, f, and g is an integer independently selected from 0 or 1; wherein two of a, b, and c are 1; and
one of d, e, f, and g is 1, or three of d, e, f, and g are 1;
wherein R1 to R7 represent monosubstitution, to the maximum allowable substitution, or no substitution;
wherein R, R′, and each of R1 to R7 are independently selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, cyclic amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
two groups R1, two groups R2, two groups R3, two groups R4, two groups R5, two groups R6, and two groups R7 can optionally join to form a ring;
wherein at least one of R1 to R7 comprises a group selected from the group consisting of, , and combinations thereof;
wherein X9 to X24 are independently selected from N or CR; and
Z is selected from the group consisting of CRR′, NR, N, O, S, and Se.