Hemispheric ordered porous Eu(TTA)3(TPPO)2/ZnO fluorescence composites and its preparation method

In this study, a kind of much uniform and rule hemispheric ordered porous Eu (TTA)3(TPPO)2/ZnO composite was synthesized by liquid phase grafting method, and ordered mesoporous ZnO was necessarily used as precursor during preparation process. The diameter of the hemispheric particle was about 1 μm, and the surfaces of the hemispheric particles were distributed a lot of ordered porous, the pore size was about 2.18 nm. Eu(TTA)3(TPPO)2 was assembled into porous ZnO matrix by liquid phase grafting method. At the same time, the Eu(TTA)3(TPPO)2 guest material played a role of structure-directing agent, which led to a realignment of porous ZnO particle, and a hemispheric morphology was obtained. ZnO had a strong emission peak at 469 nm which overlaps with the 7F0–5D2 transition excitation peak of Eu3+ at 465 nm, it indicated that the effective energy transfer could be happened between ZnO and Eu3+, which strongly enhanced the luminescence intensity of Eu3+. The optimal ratios of Eu3+ was also discussed.