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

Manjaree A. Satam, Rajesh K. Raut, N. Sekar

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Five novel fluorescent azo disperse dyes were synthesized using different diazotized aromatic amines followed by coupling with 3-(1,3-benzothiazol-2-yl) naphthalen-2-ol. These dyes were characterized by FT-IR, 1H NMR and mass spectroscopy. These azo disperse dyes were applied on polyester and their 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 properties. This investigation showed that the dyes containing benzothiazolyl residue have better fastness properties than that of the azo disperse dyes based on 2-naphthol. Effect of pH on photo physical properties was also studied.
Original languageEnglish
Pages (from-to)92-103
Number of pages12
JournalDyes and Pigments
Volume96
Issue number1
DOIs
Publication statusPublished - 2013

Keywords

  • 2-Naphthol analog
  • Benzothiazole
  • Enhanced light fastness
  • Fluorescent azo disperse dye
  • pH study
  • Photo physical property

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