Synthesis and Properties of 9,9-Diarylfluorene-Based Triaryldiamines
2001-06-30T00:00:00Z (GMT) by
9,9-Diaryl-2,7-dibromofluorene was synthesized by a triflic acid promoted Friedel−Crafts reaction. Introduction of diarylamino groups at its C2 and C7 positions by a Pd-catalyzed amination results in the formation of a novel class of triaryldiamines. The 9,9-diaryl substituents at the central linkage play a less important role in the photophyscial properties but affect the oxidation potential and improve the morphological stability of these new triarylamines.