Synthesis, solvatochromic properties and antimicrobial activities of some novel pyridone-based disperse disazo dyes

A series of novel pyridone-based disperse disazo dyes was synthesized by diazotizing and coupling reactions. The newly synthesized dyes were characterized by elemental analysis and spectral methods. The solvatochromic properties and antimicrobial activities of these pyridone-based disperse disazo dyes in various solvents were evaluated. Acid and base effects on the visible absorption maxima of the dyes are also reported.