Synthesis and Characterization of Monoazo Disperse Dyes Derived from Naphthalimide Derivatives

B. D. Enejo, U. S. Ameuru, A. Giwa, M. M. Bukhari

Abstract


New series of monoazo disperse dyes were synthesized from naphthalimide derivatives by coupling intermediate A [ 6-amino-2-(4-aminophenyl)-IH-benzo[de]isoquinoline-1,3(2H) dione] with different substituted anilines and naphthalenes in appropriate reaction condition.  The synthesized intermediates and the dyes were purified by recrystallization method. The structure of the synthesized dyes were confirmed using FTIR, 1HNMR, MS and UV-visible spectroscopic techniques. Spectrophotometric investigations of the dyes in solvent of different polarities were measured to obtain absorption maxima, molar extintion coefficient and salvatochromic effects These dyes gives percentage yield of 72-85%, molecular weight of 435-467 g/mol and melting ing point of 76-208℃ with hues such as orange, yellow and purple respectively. 


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