| 主权项 |
1. A compound having Formula I: wherein at least one of R1, R2, R3, and R4 comprises a nitrile group; wherein at least one of R1, R2, R3, and R4 has the Formula II and is fused to the aryl ring that it attaches thereto: wherein X is selected from the group consisting of CRR′, NR, O, S, and Se; wherein the wave lines indicate bonds to the aryl ring that it is fused to; wherein R1, R2, R3, R4 and R5 each independently represent mono, di, tri, or tetra substitution, or no substitution; and wherein R1, R2, R3, R4, R5, R, and R′ are each independently selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acid, ester, nitrile, isonitrile, sulfanyl, sulfonyl, sulfonyl, phosphino, and combinations thereof; and wherein any two adjacent substituents are optionally joined to form a ring. |
