Key points are not available for this paper at this time.
Four spirofluorene-9,9′-xanthene (SFX) derivatives, SFX-TAD, SFX-TCz, SFX-TPTZ and SFX-MeOTAD have been synthesized for use as hole-transport materials and fully characterized by 1H/13C NMR spectroscopy, mass spectrometry, XRD and DSC.
Maciejczyk et al. (Fri,) studied this question.