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Abstract
A new arylamine monomer with photo-crosslinkable styrylpyridinyl moiety of conjugated polyarylamine for OLED hole injection material was synthesized through two synthetic routes, BOC-amine protection/deprotection and nitro group reduction methods. Both synthetic routes yielded practically pure amine product by standard aqueous workup and crystallization in 61% overall yield from pyridinylvinylphenol 2. Their reaction efficiencies were comparatively studied in views of practicality and reaction scale. Also, the synthetic conditions of key compound of photo-crosslinker, pyridinylvinylphenol 2 was reinvestigated and established for the reproducible and reliable preparation.