Articlegreen2010

In situ Raman and IR spectroscopic analysis of indigo dye

Anna Baran · Andrea Fiedler · Hartwig Schulz · Małgorzata Barańśka

133 citations0/0 files storedAnalytical Methods

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Cultural Heritage Materials Analysis Dyeing and Modifying Textile Fibers Spectroscopy Techniques in Biomedical and Chemical Research

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.

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1997Raman spectroscopic library of natural and synthetic pigments (pre- ≈ 1850 AD)2007A Decade of Raman Spectroscopy in Art and Archaeology 2005Maya Blue: A Computational and Spectroscopic Study

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