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Issue 9, 2010
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In situ Raman and IR spectroscopic analysis of indigo dye

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Abstract

Non-destructive analysis of indigo dye in biological and textile samples is presented. Using different but complementary techniques of vibrational spectroscopy (FT-Raman and ATR-IR) detection of indigo in various samples is performed. This work shows the possibility of both vibrational analytical methods to identify indigo directly in plant tissue, commercially available pigments and cotton and silk textiles. The experimental work is supported by quantum-chemical calculations at the B3LYP/6-311++g(d,p) level of theory. Additionally, in order to follow the process of indigo formation upon leaf drying Raman mapping of Polygonum tinctorium is demonstrated.

Graphical abstract: In situ Raman and IR spectroscopic analysis of indigo dye

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Publication details

The article was received on 05 Mar 2010, accepted on 15 May 2010 and first published on 01 Jul 2010


Article type: Paper
DOI: 10.1039/C0AY00311E
Anal. Methods, 2010,2, 1372-1376

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    In situ Raman and IR spectroscopic analysis of indigo dye

    A. Baran, A. Fiedler, H. Schulz and M. Baranska, Anal. Methods, 2010, 2, 1372
    DOI: 10.1039/C0AY00311E

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