A series of photo-crosslinkable arylamine-based hole-transport
copolymers has been synthesized. The synthetic methodology employed
allows for the redox potential of the polymer to be tuned by the
incorporation of electron-donating or -withdrawing moieties. Upon
exposure to ultraviolet radiation, the polymers become insoluble,
as evidenced by UV/Vis absorption spectroscopy, a feature
that is useful for the fabrication of multilayer organic light-emitting
diodes (OLEDs) by solution processing techniques. OLEDs based on
these hole-transport polymers have been fabricated and the performance
of the devices has been evaluated. The photo-crosslinking process
has been optimized so that it no longer adversely impacts device
performance.
hole-transport agents - photo-crosslinked polymers - organic light-emitting diodes - bis(diarylamino)biphenyls
