Proceedings PaperOptical properties of transition metal oxide gels
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Transition metal oxide (T.M.O) gels exhibit extrinsic or specific optical properties. This duality is related to the fact that they can be used as transparent amorphous matrices from which high refractive index is expected, or for their mixed valence behaviour. Titanium or Zirconium oxide based gels have been used as transparent matrices in which large concentration of inorganic (Eu (III)) or organic luminophores (Rhodamine 6G , Rhodamine 640, Coumarine 4) have been incorporated. Several specific optical properties related to Titanium oxide based gels such as electrochromism photoelectrochemistry and photochemistry are also described.