Fluorescent acid azo dyes from 3-(1,3-benzothiazol-2-yl)naphthalen-2-ol and comparison with 2-naphthol analogs

Manjaree A. Satam, Rajesh K. Raut, Rahul D. Telore, N. Sekar

    Research output: Contribution to journalArticlepeer-review

    26 Citations (Scopus)

    Abstract

    New four acid azo dyes were synthesized from aromatic amines containing acidic group and 3-(1,3-benzothiazol-2-yl) naphthalen-2-ol by diazotization and coupling reaction. These dyes were characterized by FTIR, 1H NMR and mass spectral analysis. Effect of solvent polarity and role of pH on photo physical properties such as absorption, emission were studied. All these acid azo dyes were applied on wool, silk and nylon whereupon fastness properties were evaluated. A parallel series of dyes using 2-naphthol in place of benzothiazolyl were made to investigate the effect of benzothiazolyl moiety on the fastness and photo physical properties.
    Original languageEnglish
    Pages (from-to)32-42
    Number of pages11
    JournalDyes and Pigments
    Volume97
    Issue number1
    DOIs
    Publication statusPublished - 2013

    Keywords

    • 2-Naphthol analog
    • Benzothiazole
    • Fastness property
    • Fluorescent acid azo dye
    • pH study
    • Photo physical property

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