Synthesis, Characterization and Solvatochromic studies of 3-{2-(5-Bromothiazol-2-yl) diazeny l}-4-Bromopyridine-2, 6-Diamine

摘要

The 3-{2-(5-bromothiazol-2-yl)diazenyl}-4-bromopyridine-2,6-diamine was synthesized by carrying the diazotization of 5-bromothiazol-2-amine in coupling with 4-bromopyridine-2, 6-diamine as a coupling component to yield a azo dye. The structure of the dye was confirmed by UV-visible spectrophotometry, Fourier Transfer Infrared spectroscopy (FTIR), LC-MS, ~(1)H and ~(13)C NMR spectroscopic methods. The change in the absorption maxima of the synthesized compound in different solvents were determined, the solvatochromic property of the dye showed a medium red shift in different solvents and has shown the moderate solvent dependency over the bathochromic shift.