Nerv asymmetrical /quinolinoquinone[2,3-d]thiazole/oxazole-4,9-dione 2
[4(1)]-monomethine cyanines and naphthoquinone[2,3-e]oxadiazine-5,10-d
ione 2[4(1)]-monomethine cyanine dyes were synthesized to study their
spectral behaviour, solvatochromism, acid-base properties, and antimic
robial activities. This study discloses the activity of former quinoid
ring in cyanine dyes when applied as photosensitizer. These dyes are
characterized by elemental analysis, IR, H-1 NMR, and electronic absor
ption spectra.