Synthesis of New Single Black Pigments Based on Azo and Anthraquinone Moieties for LCD Black Matrix

Based on azo group and anthraquinone moiety, new black matrix pigment materials AAQ and DAAQ were synthesized for the first time through Suzuki C-N coupling. As a result of verifying UV-visible absorption spectra of the synthesized materials, DAAQ was found to absorb the entire visible region in 400 ∼ 800 nm in solution state with high extinction coefficient of 8.1 × 103 L/cm · mol. Realization of black color using a single material is expected to be useful for black matrix application. Also in film state made through spin coating, both AAQ and DAAQ absorbed the entire visible region.