SYNTHESIS AND CHARACTERIZATION OF NOVEL BLUE LIGHT-EMITTING HOLE-TRANSPORTING MATERIALS
Keywords:
Blue light-emitting materials, hole transporting materials, organic light-emitting diode, carbazole, fluoreneAbstract
A series of novel blue light-emitting hole-transporting molecules bearing the core structures of
phenylene and oligofluorenes (n = 1 to 3) end-capped with hole-transporting carbazole was synthesized
by Ullmann coupling reaction and Suzuki coupling reaction. Their electronic absorption and emission
properties vary depending on the molecular structure of the cores. All compounds fluoresce a strong
blue colour in both solutions and solid states. On excitation the energy is transferred from the outer
carbazole units into the fluorescent core.
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