| 摘要 |
A hole transporting compound for organic electroluminescent devices with good thermal stability, which includes 6,6'-bis(9H,9-carbazolyl)-N,N'-disubstituted-3,3'-bicarbazyl as a basic molecular structure, is represented by the following formula I:wherein R is a hydrogen atom, a C1-12 aliphatic alkyl group, a C3-12 branched alkyl group, a C5-12 cyclic alkyl group, or a C4-14 aromatic group, wherein the aromatic group can have one or more alkoxy or amine substituents,
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