H. Yousefi, A. Yahyazadeh, M. Yazdanbakhsh
May 16, 2012
Citations
0
Influential Citations
20
Citations
Journal
Journal of Molecular Structure
Abstract
Abstract A series of hetarylazoaminouracil dyes were prepared by coupling of 6-amino-1,3-dimethyluracil with eight diazotized heterocyclic amines in nitrosyl sulphuric acid. The prepared azo dyes were characterized by UV–Vis, FT-IR, 13 C NMR, 1 H NMR spectroscopic techniques and elemental analysis. The solvatochromism of dyes was evaluated with respect to wavelength of maximum absorption ( λ max ) in seven solvents with different polarities: acetic acid, methanol, water, chloroform, acetonitrile, dimethyl sulfoxide and dimethyl formamide. The effects of acid, base and concentration of the dye on the visible absorption spectra were also reported. In addition, the antimicrobial activity of the synthesized dyes was evaluated on Escherichia coli , Bacillus subtilis , Micrococcus leuteus and Pseudomonas aeruginosa .