Synthesis and Characterization of Some Novel Linear Azo-Azomethine ‎Compounds Based on 1-Bromo, 4-[4-(4-Nitrophenylazo) Phenoxy] Butane

T ‎ he reaction of some carbocyclic ‎and heterocyclic Schiff bases with ‎the synthesized 1-bromo, 4-[4-(4-‎nitrophenylazo) phenoxy] butane ‎and formation of novel linear azo-‎azomethine compounds in good to ‎excellent yields were investigated. ‎The compounds were fully ‎characterized by UV-Vis, FT-IR, ‎‎1H NMR spectroscopic techniques ‎and elemental analysis. Effects of ‎various solvents on their visible ‎absorption spectra at a ‎concentration of 10-5-10-6 M were ‎estimated. The color of the dyes is ‎discussed with respect to the ‎substituent therein. Introduction of ‎an electron-withdrawing group ‎into the para-position of ‎azomethines produces ‎bathochromic shift of the ‎absorption peak in all solvents. ‎The key features of these reactions ‎are, in turn, their operational ‎simplicity, mild reaction conditions ‎and easily-accessed starting ‎materials. Prog. Color Colorants ‎Coat. 5(2012), 23-33. © Institute ‎for Color Science and Technology.‎