| 主权项 |
1. A compound having the following formula:
A-L-B, Formula I; wherein A is selected from the group consisting of: wherein Z1, Z2, Z3, Z4, Z5, Z6, and Z7 are independently selected from the group consisting of N and CR1; wherein each R1 is independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein the dashed lines in A represent the bonds between A and L; wherein L is selected from the group consisting of a direct bond, benzene, biphenyl, terphenyl, pyridine, and the combinations thereof; wherein B is selected from the group consisting of biphenyl, terphenyl, triphenylene, phenanthrene, dibenzofuran, dibenzothiophene, dibenzoselenophene, aza-dibenzofuran, aza-dibenzothiophene, aza-dibenzoselenophene, aza-triphenylene, pyridine, triazine, pyramidine, and combinations thereof; and wherein B is optionally further substituted with one or more substituents selected from the group consisting of deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof. |
