Novel azobenzothiazole dyes from 2-nitrosobenzothiazoles

Novel azobenzothiazole dyes from 2-nitrosobenzothiazoles

Novel azobenzothiazole dyes obtained by condensation of 2-nitrosobenzothiazoles with several substituted anilines were synthesized and characterized. The influence of solvent polarity on absorption spectra was examined, as was the relationship between dye structures and absorption in the UV–visible...

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Veröffentlicht in:Dyes and pigments 2009-10, Vol.83 (1), p.88-94
Hauptverfasser: Faustino, H., Brannigan, C.R., Reis, L.V., Santos, P.F., Almeida, P.
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Sprache:eng
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Azo
Benzothiazole
Disperse dyes
Nitroso condensation
Spectroscopic characterization
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container_end_page 94
container_issue 1
container_start_page 88
container_title Dyes and pigments
container_volume 83
creator Faustino, H.
Brannigan, C.R.
Reis, L.V.
Santos, P.F.
Almeida, P.
description Novel azobenzothiazole dyes obtained by condensation of 2-nitrosobenzothiazoles with several substituted anilines were synthesized and characterized. The influence of solvent polarity on absorption spectra was examined, as was the relationship between dye structures and absorption in the UV–visible region. Azobenzothiazole dyes possessing an anilino unit which possessed an o-electron donating group, displayed unique absorption properties as revealed by a second, long wavelength absorption band.
doi_str_mv 10.1016/j.dyepig.2009.03.018
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subjects Azo
Benzothiazole
Disperse dyes
Nitroso condensation
Spectroscopic characterization
title Novel azobenzothiazole dyes from 2-nitrosobenzothiazoles
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