The effect of ball milling dispersion on the optical properties of organic dyes trapped in silica films by the sol-gel method Article uri icon


  • Silicon dioxide coatings containing different types of dyes were prepared using the sol-gel method. It is found that the optical density of the coatings depends on both the dye concentration and on the degree of dye agglomeration. Coatings in which the dye forms aggregates show lower optical density than those in which the dye is better dispersed in the glass matrix. Dispersion of the dye in the starting material is achieved by a ball milling process. A simple model is used to explain the dependence of the optical density on the size of the dye aggregates. © 2000 Elsevier Science B.V. All rights reserved.

publication date

  • 2000-01-01