EPR and SAXS studies of a TiO2 based gel

B. Pattier (1) , M. Henderson (1) , A. Kassiba (1) , Mihaela Girtan (2) , Alain Gibaud (1)

1 LPEC - Laboratoire de physique de l'état condensé
2 POMA - Propriétés Optiques des Matériaux et Applications

The response of a photosensitive TiO 2 -based gel to UV light is described. Upon irradiation, the gel adsorbs light at 365 nm and becomes dark blue due to the transformation of the Ti 4+ centers into Ti 3+ . This behavior is revealed using electron paramagnetic resonance spectroscopy as a function of the gel chemical composition. The structure of the TiO 2 network is studied by small angle x-ray scattering.

Mots clés: titania; gel; photosensitive material; electron paramagnetic resonance; small angle x-ray scattering

Domaines: Matière Condensée [cond-mat]

B. Pattier, M. Henderson, A. Kassiba, Mihaela Girtan, Alain Gibaud. EPR and SAXS studies of a TiO2 based gel. 2009 3rd ICTON Mediterranean Winter Conference (ICTON-MW 2009), Dec 2009, Angers, France. pp.1-3, ⟨10.1109/ICTONMW.2009.5385592⟩. ⟨hal-02612185⟩