Abstract

New methine cyanine dyes covering monomethine cyanine dyes and dimethine cyanine dyes derived from benzo[(2,3-b)benzoxazine; (2,3-e)1,3,4-oxadiazine]-5,12-dione were prepared. The electronic visible absorption spectra of all the synthesized cyanine dyes were investigated in 95% ethanol solution. Biological activity for a number of selected compounds was tested and evaluated against various bacterial strains ( Bacillus subtilis , Escherichia coli , Pseudomona aeruginosa and Staphylococcus aureus ). Structural determination was carried out via elemental analysis, visible, mass, IR and 1 H NMR spectroscopic data.

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