Qualitative and quantitative analysis of colorimetric response in different uv solar radiation level indicator bracelets based on photochromic substances

HIGHLIGHTS

• What: The aim of this research was the qualitative and quantitative analysis of the color change performance of a set of photochromic devices based on spirooxazines, as well as the analysis of these pure component substances to assess their potential usefulness as UV exposure indicators. An experiment was conducted to assess the potential of these devices as red intensity) was used for most of the red/purple samples, while the chromatic coordinate b* was used for blue photochromic (negative values indicating blue intensity). All the experiments have been done under controlled temperature conditions of around 21-22 . . .
  

   

  

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