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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/110/04/0433-0444

    • Keywords

       

      Monomethine cyanines; charge transfer; electronic absorption spectra

    • Abstract

       

      6-Amino-5-cyano-3-methyl-1,4-diarylpyrano[2,3-c]pyrazole derivatives were prepared via the interaction ofα, β-unsaturated nitriles with 3-methyl-1-phenylpyrazol-5-one as starting materials in the synthesis of new asymmetrical mono-(tri)-methine cyanine dyes. The new cyanines were characterised by elemental analysis, IR and1H-NMR spectral data. The visible absorption spectra of some selected dyes were investigated in pure and mixed solvents as well as in aqueous buffer solutions.

    • Author Affiliations

       

      R M Abd El-Aal1 F M Abd El-Latif1 A I M Koraiem1

      1. Chemistry Department, Aswan Faculty of Science, Aswan, Egypt
    • Dates

       
  • Journal of Chemical Sciences | News

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