| 主权项 |
1. A compound comprising a structure selected from the group consisting of wherein G1 has the structure: wherein G2 is selected from the group consisting of biphenyl, triphenylene, fluorene, dibenzofuran, dibenzothiophene, dibenzoselenophene, and combinations thereof; wherein L1 and L2 are each independently selected from the group consisting of a direct bond, alkyl, alkoxyl, silane, benzene, biphenyl, terphenyl, pyridine, fluorene, dibenzofuran, dibenzothiophene, dibenzoselenophene, triphenylene, and combinations thereof; wherein n is an integer selected from the group consisting of 1, 2, 3, 4 and 5; wherein Z1 to Z18 are each independently selected from the group consisting of carbon and nitrogen; wherein, when any of Z1 to Z18 is carbon, the carbon is optionally further substituted with deuterium, alkyl, alkoxyl, silane, benzene, biphenyl, terphenyl, naphthalene, triphenylene, fluorene, dibenzofuran, dibenzothiophene, pyridine, quinoline, quinazoline, and combinations thereof; wherein Z19 is selected from the group consisting of CR1R2 and NR3; wherein R1 to R3 are each independently selected from a group consisting of hydrogen, deuterium, halogen, alkyl, alkoxyl, silane, benzene, biphenyl, terphenyl, pyridine, pyrazine, pyrazine, pyramidine, triazine, fluorene, dibenzofuran, dibenzothiophene, dibenzoselenophene, triphenylene, quinoline, isoquinoline, quinazoline, benzoquinoline, benzoquinazoline, aza-fluorene, azatriphenylene, aza-dibenzofuran, aza-dibenzothiophene, aza-dibenzoselenophene, and combinations thereof; wherein R1 and R2 are optionally jointed to form a ring; wherein G2, L1 and L2 are each independently optionally further substituted with one or more substituents selected from a group consisting of deuterium, halogen, alkyl, alkoxyl, silane, nitrile, benzene, biphenyl, terphenyl, naphthalene, triphenylene, fluorene, dibenzofuran, dibenzothiophene, pyridine, furan, thiophene, quinoline, quinazoline, and combinations thereof. |
