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Keywords:

  • photochromic materials;
  • photoprotective materials;
  • liquid-filled capsules;
  • decoloration kinetics;
  • smart particles
Thumbnail image of graphical abstract

Fast responsive photochromic materials are obtained by encapsulation of the photoactive molecules within liquid-filled capsules. By properly selecting the nature of the liquid core, solid stable materials are prepared with solution-like color-changing rates that are at least tenfold faster than those measured for rigid polymer thin films and particles.