A modified one step and cost-effective chemical green route has been used to synthesize oleate-capped TiO 2 anatase nanocrystals (NCs) doped with different amounts of europium, with high yields and without high-temperature post-calcination processes. Europium doping endowed TiO 2 NCs with an intense red luminescence associated with the 5 D 0→ 7 F 2 transition of the electronic structure of Eu 3+ and was responsible for both the morphological change of the NCs structure (from nanorods to spherical nanoparticles) ...