| abstract |
The invention relates to new triarylamine derivatives containing special space-filling wing groups and to the use thereof as a hole transport material in electrographic and electroluminescent devices. In the triarylamine derivatives, n=1-10, R1 - R4 represent optionally substituted phenyl, biphenylyl, methylphenyl, naphthyl, phenanthrenyl, anthracenyl, fluorenyl, triaryl methyl aryl, or triarylsilyl aryl; Ar represents a biphenylene or a substituted fluorenylene bridge, or Ar represents a substituted biphenylene, triphenylene, or tetraphenylene bridge if n=1. |