| 主权项 |
1. A compound having formula I:wherein G1 has formula II:wherein G2 has formula III: wherein L is selected from the group consisting of benzene, biphenyl, terphenyl, triphenylene, naphthalene, phenanthrene, chrysene, fluorene, xanthene, furan, thiophene, selenophene, benzofuran, benzothiophene, dibenzofuran, dibenzothiophene, dibenzoselenophene, and combinations thereof; wherein G3 is selected from the group consisting of benzene, furan, thiophene, biphenyl, terphenyl, naphthalene, phenalene, phenanthrene, fluorene, xanthene, chrysene, benzofuran, benzothiophene, dibenzothiophene, dibenzofuran, dibenzoselenophene, indenocarbazole, benzothienocarbazole, benzofurocarbazole, benzoselenocarbazole, benzofluorenothiophene, indolocarbazole, and benzothienodibenzothiophene; wherein R2, R4, R6, and R8 each independently represent mono, di, tri, or no substitution; wherein R1, R3, R5, and R7 each independently represent mono, di, tri, tetra, or no substitution; wherein R1, R2, R3, R4, R5, R6, R7, R8, RA, and RB are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, silyl, carbonyl, alkyloxyl, nitrile, isonitrile, benzene, biphenyl, terphenyl, triphenyl, and combinations thereof; wherein L is optionally further substituted by one or more substituents selected from the group consisting of deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, aryloxy, arylthio, arylseleno, nitrile, isonitrile, and combinations thereof; wherein G3 is optionally further substituted by one or more substituents selected from the group consisting of deuterium, halide, alkyl, cycloalkyl, heteroalkyl, aryl, heteroaryl, arylalkyl, aryloxy, arylthio, arylseleno, heteroarylalkyl, heteroaryloxy, heteroarylthio, nitrile, isonitrile, and combinations thereof; wherein a is 0 or 1; b is 0, 1, 2 or 3; m is an integer from 1 to 10; n is an integer from 0 to 9; and wherein m is larger than n. |
