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                            Library & Multimedia
 Raman spectrum of monobromoindigo
NCJ Number
              304168
Journal

*Journal of Raman Spectroscopy* Volume: 43 Issue: 4 Dated: 2011 Pages: 520-525
Author(s)
          Hiroko Ajiki;
                        et al
Date Published

2011
Length
              6 pages
Annotation
              Since other constituents of Tyrian purple have been comprehensively investigated by Raman spectroscopy, but the Raman bands of 6-bromoindigo, a molecule that has been correlated with a specific snail species, Hexaplex trunculus (also known as Murex trunculus), have been reported but not previously assigned, this article reports on a project that included a complete assignment of the Raman spectrum of the 6-bromoindigo isomer, including experimental spectra recorded at 488 and 785 nm, which were compared with those collected from indigo under the same conditions.
Abstract
              Monobromoindigo is a component of Tyrian purple, a purple–red natural colorant extracted from various species of sea snails, which was possibly first produced by the ancient Phoenicians and has been employed as a symbol of royalty and power by several civilizations over the centuries. Raman spectroscopy has proved to be an effective analytical technique to detect historical dyes, as it enables rapid and accurate identification of unknowns nondestructively. The current study obtained Theoretical Raman spectra for both molecules, using density functional theory calculations. (publisher abstract modified)
      
  
          Additional Details
Grant Number(s)
        2006-DN-BX-K034


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)


  
  
        
  Award
        Development of Advanced Raman Spectroscopy Methods and Databases for the Evaluation of Trace Evidence and the Examination of Questioned Documents
    
  
  
Date Published: January 1, 2011
    
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