OICC Press Journal of Nanostructure in Chemistry 2193-8865 3 1 (December 2013) 2013 04 19 Rugby-ball-shaped Na0.5La0.5MoO4:Eu3+ 3D architectures: synthesis, characterization, and their luminescence behavior 10.1186/2193-8865-3-14 EN Rajagopalan Krishnan Department of Physics, B.S. Abdur Rahman University, Vandalur, Chennai, Tamilnadu, 600048, IN Jagannathan Thirumalai Department of Physics, B.S. Abdur Rahman University, Vandalur, Chennai, Tamilnadu, 600048, IN Ithrees Basha Shameem Banu Department of Physics, B.S. Abdur Rahman University, Vandalur, Chennai, Tamilnadu, 600048, IN Anthuvan John Peter Department of Physics, B.S. Abdur Rahman University, Vandalur, Chennai, Tamilnadu, 600048, IN Journal Article 2013 04 19 Abstract Three-dimensional self-assembled rugby-ball-shaped microarchitectures of tetragonal Na 0.5 La 0.5 MoO 4 :Eu 3+ crystal structure were synthesized by facile hydrothermal method at 200°C for 8 h using ethylenediaminetetraacetic acid (EDTA) as surfactant. Structure and morphology of Na 0.5 La 0.5 MoO 4 :Eu 3+ were investigated by X-ray diffraction and scanning electron microscopy. In the hydrothermal process, EDTA not only acts as a chelating reagent to facilitate the formation of Na 0.5 La 0.5 MoO 4 :Eu 3+ but also acts as a surface capping agent to adhere to the newly created surface and to promote crystal splitting. The molar concentration of EDTA plays an important role and can effectively tune the size of the particles. Photoluminescence study reveals that hierarchical structures of Na 0.5 La 0.5 MoO 4 :Eu 3+ show a strong emission in the red region under 395-nm UV excitation.