Why does solvatochromic Reichardt's dye (Betaine 30) bleach?

I'm using Reichardt's dye as a solvatochromic probe in acrylate monomers, homopolymers, and copolymers. In some acrylates, for example HEMA, the absorption can not be detected due to bleaching of...

12 June 2017 391 1 View