Synthesis of bis-aminosubstituted indocyanine dyes for their use in polymeric compositions

• Synthesis of bis-aminosubstituted cyanine dyes with variable optical characteristics.
• Chromophores for the development of polymeric systems with optical properties.
• Chromophore-containing polymeric systems development by covalent incorporation.

The synthesis of a set of open-chain bis-aminosubstituted cyanine dyes as well as others with cyclic fragments in the polymethine chain is presented. These dyes are suitable for the development of polymeric compositions with variable optical characteristics as they can be covalently incorporated into the polymer.